Richard W.M. Jones
2012-Mar-13 08:26 UTC
[Libguestfs] [PATCH 0/2] 'int' to 'size_t' changes
These two patches are probably not completely independent, but separating them is a lot of work. With *both* patches applied, all the tests and extra-tests pass. That's no guarantee however that there isn't a mistake, so I don't think this patch is a candidate for the 1.16 branch, until it's had a lot more testing in development. Rich.
Richard W.M. Jones
2012-Mar-13 08:26 UTC
[Libguestfs] [PATCH 1/2] daemon: Implement a growable strings buffer type.
From: "Richard W.M. Jones" <rjones at redhat.com>
Previously a lot of daemon code used three variables (a string list,
'int size' and 'int alloc') to track growable strings buffers.
This
commit implements a simple struct containing the same variables, but
using size_t instead of int:
struct stringsbuf {
char **argv;
size_t size;
size_t alloc;
};
Use it like this:
DECLARE_STRINGSBUF (ret);
//...
if (add_string (&ret, str) == -1)
return NULL;
//...
if (end_stringsbuf (&ret) == -1)
return NULL;
return ret.argv;
---
daemon/9p.c | 23 +++++++++++------------
daemon/available.c | 9 ++++-----
daemon/blkid.c | 38 ++++++++++++++++++--------------------
daemon/daemon.h | 33 +++++++++++++++++++++++++++------
daemon/devsparts.c | 50 +++++++++++++++++++++++---------------------------
daemon/ext2.c | 17 ++++++++---------
daemon/file.c | 11 +++++------
daemon/find.c | 18 +++++++++---------
daemon/guestfsd.c | 51 +++++++++++++++++++++++++++------------------------
daemon/initrd.c | 11 +++++------
daemon/inotify.c | 11 +++++------
daemon/link.c | 9 ++++-----
daemon/ls.c | 15 ++++++++-------
daemon/lvm.c | 32 ++++++++++++++++----------------
daemon/md.c | 29 +++++++++++++++--------------
daemon/mount.c | 48 ++++++++++++++++++++++++------------------------
16 files changed, 209 insertions(+), 196 deletions(-)
diff --git a/daemon/9p.c b/daemon/9p.c
index 8476c45..6243919 100644
--- a/daemon/9p.c
+++ b/daemon/9p.c
@@ -40,8 +40,7 @@ static char *read_whole_file (const char *filename);
char **
do_list_9p (void)
{
- char **r = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (r);
DIR *dir;
@@ -55,10 +54,10 @@ do_list_9p (void)
* the virtio driver isn't loaded. Don't return an error
* in this case, but return an empty list.
*/
- if (add_string (&r, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&r) == -1)
return NULL;
- return r;
+ return r.argv;
}
while (1) {
@@ -79,7 +78,7 @@ do_list_9p (void)
if (mount_tag == 0)
continue;
- if (add_string (&r, &size, &alloc, mount_tag) == -1) {
+ if (add_string (&r, mount_tag) == -1) {
free (mount_tag);
closedir (dir);
return NULL;
@@ -92,7 +91,7 @@ do_list_9p (void)
/* Check readdir didn't fail */
if (errno != 0) {
reply_with_perror ("readdir: /sys/block");
- free_stringslen (r, size);
+ free_stringslen (r.argv, r.size);
closedir (dir);
return NULL;
}
@@ -100,19 +99,19 @@ do_list_9p (void)
/* Close the directory handle */
if (closedir (dir) == -1) {
reply_with_perror ("closedir: /sys/block");
- free_stringslen (r, size);
+ free_stringslen (r.argv, r.size);
return NULL;
}
- /* Sort the tags. Note that r might be NULL if there are no tags. */
- if (r != NULL)
- sort_strings (r, size);
+ /* Sort the tags. */
+ if (r.size > 0)
+ sort_strings (r.argv, r.size);
/* NULL terminate the list */
- if (add_string (&r, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&r) == -1)
return NULL;
- return r;
+ return r.argv;
}
/* Read whole file into dynamically allocated array. If there is an
diff --git a/daemon/available.c b/daemon/available.c
index 6d2aea2..97f1558 100644
--- a/daemon/available.c
+++ b/daemon/available.c
@@ -58,16 +58,15 @@ char **
do_available_all_groups (void)
{
size_t i;
- char **groups = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (groups);
for (i = 0; optgroups[i].group != NULL; ++i) {
- if (add_string (&groups, &size, &alloc, optgroups[i].group) ==
-1)
+ if (add_string (&groups, optgroups[i].group) == -1)
return NULL;
}
- if (add_string (&groups, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&groups) == -1)
return NULL;
- return groups; /* caller frees */
+ return groups.argv; /* caller frees */
}
diff --git a/daemon/blkid.c b/daemon/blkid.c
index 83cf7f5..a6170dd 100644
--- a/daemon/blkid.c
+++ b/daemon/blkid.c
@@ -132,8 +132,7 @@ blkid_with_p_i_opt (const char *device)
int r;
char *out = NULL, *err = NULL;
char **lines = NULL;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
r = command (&out, &err, "blkid", "-c",
"/dev/null",
"-p", "-i", "-o",
"export", device, NULL);
@@ -176,28 +175,28 @@ blkid_with_p_i_opt (const char *device)
*eq = '\0'; eq++;
/* Add the key/value pair to the output */
- if (add_string (&ret, &size, &alloc, line) == -1 ||
- add_string (&ret, &size, &alloc, eq) == -1) goto error;
+ if (add_string (&ret, line) == -1 ||
+ add_string (&ret, eq) == -1) goto error;
} else {
fprintf (stderr, "blkid: unexpected blkid output ignored: %s",
line);
}
}
- if (add_string (&ret, &size, &alloc, NULL) == -1) goto error;
+ if (end_stringsbuf (&ret) == -1) goto error;
free (out);
free (err);
free_strings (lines);
- return ret;
+ return ret.argv;
error:
free (out);
free (err);
if (lines)
free_strings (lines);
- if (ret)
- free_strings (ret);
+ if (ret.argv)
+ free_strings (ret.argv);
return NULL;
}
@@ -206,33 +205,32 @@ static char **
blkid_without_p_i_opt(const char *device)
{
char *s;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
- if (add_string (&ret, &size, &alloc, "TYPE") == -1)
goto error;
+ if (add_string (&ret, "TYPE") == -1) goto error;
s = get_blkid_tag (device, "TYPE");
if (s == NULL) goto error;
- if (add_string (&ret, &size, &alloc, s) == -1)
+ if (add_string (&ret, s) == -1)
goto error;
- if (add_string (&ret, &size, &alloc, "LABEL") == -1)
goto error;
+ if (add_string (&ret, "LABEL") == -1) goto error;
s = get_blkid_tag (device, "LABEL");
if (s == NULL) goto error;
- if (add_string (&ret, &size, &alloc, s) == -1)
+ if (add_string (&ret, s) == -1)
goto error;
- if (add_string (&ret, &size, &alloc, "UUID") == -1)
goto error;
+ if (add_string (&ret, "UUID") == -1) goto error;
s = get_blkid_tag (device, "UUID");
if (s == NULL) goto error;
- if (add_string (&ret, &size, &alloc, s) == -1)
+ if (add_string (&ret, s) == -1)
goto error;
- if (add_string (&ret, &size, &alloc, NULL) == -1) goto error;
+ if (end_stringsbuf (&ret) == -1) goto error;
- return ret;
+ return ret.argv;
error:
- if (ret)
- free_strings (ret);
+ if (ret.argv)
+ free_strings (ret.argv);
return NULL;
}
diff --git a/daemon/daemon.h b/daemon/daemon.h
index b515fe4..b973a7f 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -47,14 +47,35 @@ extern int xwrite (int sock, const void *buf, size_t len)
extern int xread (int sock, void *buf, size_t len)
__attribute__((__warn_unused_result__));
-extern int add_string_nodup (char ***argv, int *size, int *alloc, char *str);
-extern int add_string (char ***argv, int *size, int *alloc, const char *str);
+/* Growable strings buffer. */
+struct stringsbuf {
+ char **argv;
+ size_t size;
+ size_t alloc;
+};
+#define DECLARE_STRINGSBUF(v) \
+ struct stringsbuf (v) = { .argv = NULL, .size = 0, .alloc = 0 }
+
+/* Append a string to the strings buffer.
+ *
+ * add_string_nodup: don't copy the string.
+ * add_string: copy the string.
+ * end_stringsbuf: NULL-terminate the buffer.
+ *
+ * All functions may fail. If these functions return -1, then
+ * reply_with_* has been called, the strings have been freed and the
+ * buffer should no longer be used.
+ */
+extern int add_string_nodup (struct stringsbuf *sb, char *str);
+extern int add_string (struct stringsbuf *sb, const char *str);
+extern int end_stringsbuf (struct stringsbuf *sb);
+
extern size_t count_strings (char *const *argv);
-extern void sort_strings (char **argv, int len);
+extern void sort_strings (char **argv, size_t len);
extern void free_strings (char **argv);
-extern void free_stringslen (char **argv, int len);
+extern void free_stringslen (char **argv, size_t len);
-extern int is_power_of_2 (unsigned long v);
+extern char **split_lines (char *str);
#define command(out,err,name,...) commandf((out),(err),0,(name),__VA_ARGS__)
#define commandr(out,err,name,...) commandrf((out),(err),0,(name),__VA_ARGS__)
@@ -74,7 +95,7 @@ extern int commandvf (char **stdoutput, char **stderror, int
flags,
extern int commandrvf (char **stdoutput, char **stderror, int flags,
char const* const *argv);
-extern char **split_lines (char *str);
+extern int is_power_of_2 (unsigned long v);
extern void trim (char *str);
diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 440739f..6fb0097 100644
--- a/daemon/devsparts.c
+++ b/daemon/devsparts.c
@@ -31,15 +31,13 @@
#include "daemon.h"
#include "actions.h"
-typedef int (*block_dev_func_t)(const char *dev,
- char ***r, int *size, int *alloc);
+typedef int (*block_dev_func_t) (const char *dev, struct stringsbuf *r);
/* Execute a given function for each discovered block device */
-static char**
+static char **
foreach_block_device (block_dev_func_t func)
{
- char **r = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (r);
DIR *dir;
int err = 0;
@@ -78,7 +76,7 @@ foreach_block_device (block_dev_func_t func)
close (fd);
/* Call the map function for this device */
- if((*func)(d->d_name, &r, &size, &alloc) != 0) {
+ if((*func)(d->d_name, &r) != 0) {
err = 1;
break;
}
@@ -88,7 +86,7 @@ foreach_block_device (block_dev_func_t func)
/* Check readdir didn't fail */
if(0 != errno) {
reply_with_perror ("readdir: /sys/block");
- free_stringslen(r, size);
+ free_stringslen (r.argv, r.size);
closedir (dir);
return NULL;
}
@@ -96,37 +94,36 @@ foreach_block_device (block_dev_func_t func)
/* Close the directory handle */
if (closedir (dir) == -1) {
reply_with_perror ("closedir: /sys/block");
- free_stringslen(r, size);
+ free_stringslen (r.argv, r.size);
return NULL;
}
/* Free the result list on error */
- if(err) {
- free_stringslen(r, size);
+ if (err) {
+ free_stringslen (r.argv, r.size);
return NULL;
}
- /* Sort the devices. Note that r might be NULL if there are no devices. */
- if (r != NULL)
- sort_strings (r, size);
+ /* Sort the devices. */
+ if (r.size > 0)
+ sort_strings (r.argv, r.size);
/* NULL terminate the list */
- if (add_string (&r, &size, &alloc, NULL) == -1) {
+ if (end_stringsbuf (&r) == -1) {
return NULL;
}
- return r;
+ return r.argv;
}
/* Add a device to the list of devices */
static int
-add_device(const char *device,
- char ***const r, int *const size, int *const alloc)
+add_device (const char *device, struct stringsbuf *r)
{
char dev_path[256];
snprintf (dev_path, sizeof dev_path, "/dev/%s", device);
- if (add_string (r, size, alloc, dev_path) == -1) {
+ if (add_string (r, dev_path) == -1) {
return -1;
}
@@ -136,12 +133,11 @@ add_device(const char *device,
char **
do_list_devices (void)
{
- return foreach_block_device(add_device);
+ return foreach_block_device (add_device);
}
static int
-add_partitions(const char *device,
- char ***const r, int *const size, int *const alloc)
+add_partitions (const char *device, struct stringsbuf *r)
{
char devdir[256];
@@ -151,7 +147,7 @@ add_partitions(const char *device,
DIR *dir = opendir (devdir);
if (!dir) {
reply_with_perror ("opendir: %s", devdir);
- free_stringslen (*r, *size);
+ free_stringslen (r->argv, r->size);
return -1;
}
@@ -165,7 +161,7 @@ add_partitions(const char *device,
char part[256];
snprintf (part, sizeof part, "/dev/%s", d->d_name);
- if (add_string (r, size, alloc, part) == -1) {
+ if (add_string (r, part) == -1) {
closedir (dir);
return -1;
}
@@ -173,9 +169,9 @@ add_partitions(const char *device,
}
/* Check if readdir failed */
- if(0 != errno) {
+ if (0 != errno) {
reply_with_perror ("readdir: %s", devdir);
- free_stringslen(*r, *size);
+ free_stringslen (r->argv, r->size);
closedir (dir);
return -1;
}
@@ -183,7 +179,7 @@ add_partitions(const char *device,
/* Close the directory handle */
if (closedir (dir) == -1) {
reply_with_perror ("closedir: /sys/block/%s", device);
- free_stringslen (*r, *size);
+ free_stringslen (r->argv, r->size);
return -1;
}
@@ -193,7 +189,7 @@ add_partitions(const char *device,
char **
do_list_partitions (void)
{
- return foreach_block_device(add_partitions);
+ return foreach_block_device (add_partitions);
}
char *
diff --git a/daemon/ext2.c b/daemon/ext2.c
index 09037fb..5defbc8 100644
--- a/daemon/ext2.c
+++ b/daemon/ext2.c
@@ -63,8 +63,7 @@ do_tune2fs_l (const char *device)
int r;
char *out, *err;
char *p, *pend, *colon;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
char prog[] = "tune2fs";
if (e2prog (prog) == -1)
@@ -108,30 +107,30 @@ do_tune2fs_l (const char *device)
do { colon++; } while (*colon && c_isspace (*colon));
- if (add_string (&ret, &size, &alloc, p) == -1) {
+ if (add_string (&ret, p) == -1) {
free (out);
return NULL;
}
if (STREQ (colon, "<none>") ||
STREQ (colon, "<not available>") ||
STREQ (colon, "(none)")) {
- if (add_string (&ret, &size, &alloc, "") == -1) {
+ if (add_string (&ret, "") == -1) {
free (out);
return NULL;
}
} else {
- if (add_string (&ret, &size, &alloc, colon) == -1) {
+ if (add_string (&ret, colon) == -1) {
free (out);
return NULL;
}
}
}
else {
- if (add_string (&ret, &size, &alloc, p) == -1) {
+ if (add_string (&ret, p) == -1) {
free (out);
return NULL;
}
- if (add_string (&ret, &size, &alloc, "") == -1) {
+ if (add_string (&ret, "") == -1) {
free (out);
return NULL;
}
@@ -142,10 +141,10 @@ do_tune2fs_l (const char *device)
free (out);
- if (add_string (&ret, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&ret) == -1)
return NULL;
- return ret;
+ return ret.argv;
}
int
diff --git a/daemon/file.c b/daemon/file.c
index 5235446..161ea31 100644
--- a/daemon/file.c
+++ b/daemon/file.c
@@ -156,8 +156,7 @@ do_cat (const char *path)
char **
do_read_lines (const char *path)
{
- char **r = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (r);
FILE *fp;
char *line = NULL;
size_t len = 0;
@@ -179,7 +178,7 @@ do_read_lines (const char *path)
else if (n >= 1 && line[n-1] == '\n')
line[n-1] = '\0';
- if (add_string (&r, &size, &alloc, line) == -1) {
+ if (add_string (&r, line) == -1) {
free (line);
fclose (fp);
return NULL;
@@ -188,18 +187,18 @@ do_read_lines (const char *path)
free (line);
- if (add_string (&r, &size, &alloc, NULL) == -1) {
+ if (end_stringsbuf (&r) == -1) {
fclose (fp);
return NULL;
}
if (fclose (fp) == EOF) {
reply_with_perror ("fclose: %s", path);
- free_strings (r);
+ free_stringslen (r.argv, r.size);
return NULL;
}
- return r;
+ return r.argv;
}
int
diff --git a/daemon/find.c b/daemon/find.c
index 0b8c243..014712e 100644
--- a/daemon/find.c
+++ b/daemon/find.c
@@ -55,8 +55,7 @@ do_find (const char *dir)
int r, len, sysrootdirlen;
char *cmd;
FILE *fp;
- char **res = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
char *sysrootdir;
char str[PATH_MAX];
@@ -105,28 +104,29 @@ do_find (const char *dir)
continue;
/* Remove the directory part of the path when adding it. */
- if (add_string (&res, &size, &alloc, str + sysrootdirlen) ==
-1) {
+ if (add_string (&ret, str + sysrootdirlen) == -1) {
pclose (fp);
return NULL;
}
}
if (pclose (fp) != 0) {
reply_with_perror ("pclose");
- free_stringslen (res, size);
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
if (r == -1) {
- free_stringslen (res, size);
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
- if (add_string (&res, &size, &alloc, NULL) == -1)
- return NULL;
+ if (ret.size > 0)
+ sort_strings (ret.argv, ret.size);
- sort_strings (res, size-1);
+ if (end_stringsbuf (&ret) == -1)
+ return NULL;
- return res; /* caller frees */
+ return ret.argv; /* caller frees */
}
/* The code below assumes each path returned can fit into a protocol
diff --git a/daemon/guestfsd.c b/daemon/guestfsd.c
index 721c169..6174074 100644
--- a/daemon/guestfsd.c
+++ b/daemon/guestfsd.c
@@ -417,46 +417,50 @@ xread (int sock, void *v_buf, size_t len)
}
int
-add_string_nodup (char ***argv, int *size, int *alloc, char *str)
+add_string_nodup (struct stringsbuf *sb, char *str)
{
char **new_argv;
- if (*size >= *alloc) {
- *alloc += 64;
- new_argv = realloc (*argv, *alloc * sizeof (char *));
+ if (sb->size >= sb->alloc) {
+ sb->alloc += 64;
+ new_argv = realloc (sb->argv, sb->alloc * sizeof (char *));
if (new_argv == NULL) {
reply_with_perror ("realloc");
- free_strings (*argv);
- *argv = NULL;
+ free_stringslen (sb->argv, sb->size);
+ sb->argv = NULL;
return -1;
}
- *argv = new_argv;
+ sb->argv = new_argv;
}
- (*argv)[*size] = str;
+ sb->argv[sb->size] = str;
+ sb->size++;
- (*size)++;
return 0;
}
int
-add_string (char ***argv, int *size, int *alloc, const char *str)
+add_string (struct stringsbuf *sb, const char *str)
{
- char *new_str;
+ char *new_str = NULL;
if (str) {
new_str = strdup (str);
if (new_str == NULL) {
reply_with_perror ("strdup");
- free_strings (*argv);
- *argv = NULL;
+ free_stringslen (sb->argv, sb->size);
+ sb->argv = NULL;
return -1;
}
- } else {
- new_str = NULL;
}
- return add_string_nodup (argv, size, alloc, new_str);
+ return add_string_nodup (sb, new_str);
+}
+
+int
+end_stringsbuf (struct stringsbuf *sb)
+{
+ return add_string_nodup (sb, NULL);
}
size_t
@@ -485,7 +489,7 @@ compare (const void *vp1, const void *vp2)
}
void
-sort_strings (char **argv, int len)
+sort_strings (char **argv, size_t len)
{
qsort (argv, len, sizeof (char *), compare);
}
@@ -501,9 +505,9 @@ free_strings (char **argv)
}
void
-free_stringslen (char **argv, int len)
+free_stringslen (char **argv, size_t len)
{
- int i;
+ size_t i;
for (i = 0; i < len; ++i)
free (argv[i]);
@@ -946,8 +950,7 @@ commandrvf (char **stdoutput, char **stderror, int flags,
char **
split_lines (char *str)
{
- char **lines = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (lines);
char *p, *pend;
if (STREQ (str, ""))
@@ -965,7 +968,7 @@ split_lines (char *str)
pend++;
}
- if (add_string (&lines, &size, &alloc, p) == -1) {
+ if (add_string (&lines, p) == -1) {
return NULL;
}
@@ -973,10 +976,10 @@ split_lines (char *str)
}
empty_list:
- if (add_string (&lines, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&lines) == -1)
return NULL;
- return lines;
+ return lines.argv;
}
/* Skip leading and trailing whitespace, updating the original string
diff --git a/daemon/initrd.c b/daemon/initrd.c
index d9c7050..c1ef2d1 100644
--- a/daemon/initrd.c
+++ b/daemon/initrd.c
@@ -36,8 +36,7 @@ do_initrd_list (const char *path)
FILE *fp;
char *cmd;
char filename[PATH_MAX];
- char **filenames = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (filenames);
size_t len;
/* "zcat /sysroot/<path> | cpio --quiet -it", but path must
be quoted. */
@@ -62,24 +61,24 @@ do_initrd_list (const char *path)
if (len > 0 && filename[len-1] == '\n')
filename[len-1] = '\0';
- if (add_string (&filenames, &size, &alloc, filename) == -1) {
+ if (add_string (&filenames, filename) == -1) {
pclose (fp);
return NULL;
}
}
- if (add_string (&filenames, &size, &alloc, NULL) == -1) {
+ if (end_stringsbuf (&filenames) == -1) {
pclose (fp);
return NULL;
}
if (pclose (fp) != 0) {
reply_with_perror ("pclose");
- free_strings (filenames);
+ free_stringslen (filenames.argv, filenames.size);
return NULL;
}
- return filenames;
+ return filenames.argv;
}
char *
diff --git a/daemon/inotify.c b/daemon/inotify.c
index 6c00fd0..ed425b8 100644
--- a/daemon/inotify.c
+++ b/daemon/inotify.c
@@ -301,8 +301,7 @@ do_inotify_read (void)
char **
do_inotify_files (void)
{
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
unsigned int i;
FILE *fp = NULL;
guestfs_int_inotify_event_list *events;
@@ -359,23 +358,23 @@ do_inotify_files (void)
}
while (fgets (buf, sizeof buf, fp) != NULL) {
- int len = strlen (buf);
+ size_t len = strlen (buf);
if (len > 0 && buf[len-1] == '\n')
buf[len-1] = '\0';
- if (add_string (&ret, &size, &alloc, buf) == -1)
+ if (add_string (&ret, buf) == -1)
goto error;
}
fclose (fp); /* implicitly closes fd */
fp = NULL;
- if (add_string (&ret, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&ret) == -1)
goto error;
unlink (tempfile);
- return ret;
+ return ret.argv;
error:
if (fp != NULL)
diff --git a/daemon/link.c b/daemon/link.c
index b27e72c..a8162a2 100644
--- a/daemon/link.c
+++ b/daemon/link.c
@@ -60,8 +60,7 @@ do_readlinklist (const char *path, char *const *names)
ssize_t r;
char link[PATH_MAX];
const char *str;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
CHROOT_IN;
fd_cwd = open (path, O_RDONLY | O_DIRECTORY);
@@ -87,7 +86,7 @@ do_readlinklist (const char *path, char *const *names)
str = link;
} else
str = "";
- if (add_string (&ret, &size, &alloc, str) == -1) {
+ if (add_string (&ret, str) == -1) {
close (fd_cwd);
return NULL;
}
@@ -95,10 +94,10 @@ do_readlinklist (const char *path, char *const *names)
close (fd_cwd);
- if (add_string (&ret, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&ret) == -1)
return NULL;
- return ret;
+ return ret.argv;
}
static int
diff --git a/daemon/ls.c b/daemon/ls.c
index 1df0b6a..5c76d7e 100644
--- a/daemon/ls.c
+++ b/daemon/ls.c
@@ -32,8 +32,7 @@
char **
do_ls (const char *path)
{
- char **r = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
DIR *dir;
struct dirent *d;
@@ -50,25 +49,27 @@ do_ls (const char *path)
if (STREQ (d->d_name, ".") || STREQ (d->d_name,
".."))
continue;
- if (add_string (&r, &size, &alloc, d->d_name) == -1) {
+ if (add_string (&ret, d->d_name) == -1) {
closedir (dir);
return NULL;
}
}
- if (add_string (&r, &size, &alloc, NULL) == -1) {
+ if (ret.size > 0)
+ sort_strings (ret.argv, ret.size);
+
+ if (end_stringsbuf (&ret) == -1) {
closedir (dir);
return NULL;
}
if (closedir (dir) == -1) {
reply_with_perror ("closedir: %s", path);
- free_strings (r);
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
- sort_strings (r, size-1);
- return r;
+ return ret.argv;
}
/* Because we can't chroot and run the ls command (since 'ls'
won't
diff --git a/daemon/lvm.c b/daemon/lvm.c
index 9a71c65..8b56921 100644
--- a/daemon/lvm.c
+++ b/daemon/lvm.c
@@ -45,9 +45,8 @@ static char **
convert_lvm_output (char *out, const char *prefix)
{
char *p, *pend;
- char **r = NULL;
- int size = 0, alloc = 0;
int len;
+ DECLARE_STRINGSBUF (ret);
char buf[256];
char *str;
@@ -79,7 +78,7 @@ convert_lvm_output (char *out, const char *prefix)
} else
str = p;
- if (add_string (&r, &size, &alloc, str) == -1) {
+ if (add_string (&ret, str) == -1) {
free (out);
return NULL;
}
@@ -89,11 +88,13 @@ convert_lvm_output (char *out, const char *prefix)
free (out);
- if (add_string (&r, &size, &alloc, NULL) == -1)
+ if (ret.size > 0)
+ sort_strings (ret.argv, ret.size);
+
+ if (end_stringsbuf (&ret) == -1)
return NULL;
- sort_strings (r, size-1);
- return r;
+ return ret.argv;
}
char **
@@ -769,8 +770,7 @@ do_lvm_canonical_lv_name (const char *device)
char **
do_list_dm_devices (void)
{
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
struct dirent *d;
DIR *dir;
int r;
@@ -802,7 +802,7 @@ do_list_dm_devices (void)
/* Ignore dm devices which are LVs. */
r = lv_canonical (devname, NULL);
if (r == -1) {
- free_stringslen (ret, size);
+ free_stringslen (ret.argv, ret.size);
closedir (dir);
return NULL;
}
@@ -810,7 +810,7 @@ do_list_dm_devices (void)
continue;
/* Not an LV, so add it. */
- if (add_string (&ret, &size, &alloc, devname) == -1) {
+ if (add_string (&ret, devname) == -1) {
closedir (dir);
return NULL;
}
@@ -819,7 +819,7 @@ do_list_dm_devices (void)
/* Did readdir fail? */
if (errno != 0) {
reply_with_perror ("readdir: /dev/mapper");
- free_stringslen (ret, size);
+ free_stringslen (ret.argv, ret.size);
closedir (dir);
return NULL;
}
@@ -827,17 +827,17 @@ do_list_dm_devices (void)
/* Close the directory handle. */
if (closedir (dir) == -1) {
reply_with_perror ("closedir: /dev/mapper");
- free_stringslen (ret, size);
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
/* Sort the output (may be empty). */
- if (ret != NULL)
- sort_strings (ret, size);
+ if (ret.size > 0)
+ sort_strings (ret.argv, ret.size);
/* NULL-terminate the list. */
- if (add_string (&ret, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&ret) == -1)
return NULL;
- return ret;
+ return ret.argv;
}
diff --git a/daemon/md.c b/daemon/md.c
index 41e2c75..78e84f3 100644
--- a/daemon/md.c
+++ b/daemon/md.c
@@ -180,8 +180,7 @@ glob_errfunc (const char *epath, int eerrno)
char **
do_list_md_devices (void)
{
- char **r = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
glob_t mds;
memset(&mds, 0, sizeof(mds));
@@ -218,17 +217,19 @@ do_list_md_devices (void)
n = mempcpy(n, &mds.gl_pathv[i][strlen(PREFIX)], len);
*n = '\0';
- if (add_string_nodup (&r, &size, &alloc, dev) == -1) goto
error;
+ if (add_string_nodup (&ret, dev) == -1) goto error;
}
- if (add_string_nodup (&r, &size, &alloc, NULL) == -1) goto error;
+ if (end_stringsbuf (&ret) == -1) goto error;
globfree (&mds);
- return r;
+ return ret.argv;
error:
globfree (&mds);
- if (r != NULL) free_strings (r);
+ if (ret.argv != NULL)
+ free_stringslen (ret.argv, ret.size);
+
return NULL;
}
@@ -241,8 +242,7 @@ do_md_detail(const char *md)
char *out = NULL, *err = NULL;
char **lines = NULL;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
const char *mdadm[] = { "mdadm", "-D",
"--export", md, NULL };
r = commandv (&out, &err, mdadm);
@@ -286,8 +286,8 @@ do_md_detail(const char *md)
}
/* Add the key/value pair to the output */
- if (add_string (&ret, &size, &alloc, line) == -1 ||
- add_string (&ret, &size, &alloc, eq) == -1) goto error;
+ if (add_string (&ret, line) == -1 ||
+ add_string (&ret, eq) == -1) goto error;
} else {
/* Ignore lines with no equals sign (shouldn't happen). Log to stderr
so
* it will show up in LIBGUESTFS_DEBUG. */
@@ -299,17 +299,18 @@ do_md_detail(const char *md)
free (err);
free_strings (lines);
- if (add_string (&ret, &size, &alloc, NULL) == -1) return NULL;
+ if (end_stringsbuf (&ret) == -1)
+ return NULL;
- return ret;
+ return ret.argv;
error:
free (out);
free (err);
if (lines)
free_strings (lines);
- if (ret)
- free_strings (ret);
+ if (ret.argv != NULL)
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
diff --git a/daemon/mount.c b/daemon/mount.c
index 0c393f7..5e74ce8 100644
--- a/daemon/mount.c
+++ b/daemon/mount.c
@@ -224,8 +224,7 @@ mounts_or_mountpoints (int mp)
{
FILE *fp;
struct mntent *m;
- char **ret = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (ret);
size_t i;
int r;
@@ -241,42 +240,43 @@ mounts_or_mountpoints (int mp)
while ((m = getmntent (fp)) != NULL) {
/* Allow a mount directory like "/sysroot". */
if (sysroot_len > 0 && STREQ (m->mnt_dir, sysroot)) {
- if (add_string (&ret, &size, &alloc, m->mnt_fsname) == -1)
{
+ if (add_string (&ret, m->mnt_fsname) == -1) {
error:
endmntent (fp);
return NULL;
}
if (mp &&
- add_string (&ret, &size, &alloc, "/") == -1)
+ add_string (&ret, "/") == -1)
goto error;
}
/* Or allow a mount directory like "/sysroot/...". */
if (STRPREFIX (m->mnt_dir, sysroot) &&
m->mnt_dir[sysroot_len] == '/') {
- if (add_string (&ret, &size, &alloc, m->mnt_fsname) == -1)
+ if (add_string (&ret, m->mnt_fsname) == -1)
goto error;
if (mp &&
- add_string (&ret, &size, &alloc,
&m->mnt_dir[sysroot_len]) == -1)
+ add_string (&ret, &m->mnt_dir[sysroot_len]) == -1)
goto error;
}
}
endmntent (fp);
- if (add_string (&ret, &size, &alloc, NULL) == -1)
+ if (end_stringsbuf (&ret) == -1)
return NULL;
/* Convert /dev/mapper LV paths into canonical paths (RHBZ#646432). */
- for (i = 0; ret[i] != NULL; i += mp ? 2 : 1) {
- if (STRPREFIX (ret[i], "/dev/mapper/") || STRPREFIX (ret[i],
"/dev/dm-")) {
+ for (i = 0; ret.argv[i] != NULL; i += mp ? 2 : 1) {
+ if (STRPREFIX (ret.argv[i], "/dev/mapper/") ||
+ STRPREFIX (ret.argv[i], "/dev/dm-")) {
char *canonical;
- r = lv_canonical (ret[i], &canonical);
+ r = lv_canonical (ret.argv[i], &canonical);
if (r == -1) {
- free_strings (ret);
+ free_stringslen (ret.argv, ret.size);
return NULL;
}
if (r == 1) {
- free (ret[i]);
- ret[i] = canonical;
+ free (ret.argv[i]);
+ ret.argv[i] = canonical;
}
/* Ignore the case where r == 0. This might happen where
* eg. a LUKS /dev/mapper device is mounted, but that won't
@@ -285,7 +285,7 @@ mounts_or_mountpoints (int mp)
}
}
- return ret;
+ return ret.argv;
}
char **
@@ -325,8 +325,7 @@ do_umount_all (void)
{
FILE *fp;
struct mntent *m;
- char **mounts = NULL;
- int size = 0, alloc = 0;
+ DECLARE_STRINGSBUF (mounts);
char *err;
int i, r;
@@ -342,14 +341,14 @@ do_umount_all (void)
while ((m = getmntent (fp)) != NULL) {
/* Allow a mount directory like "/sysroot". */
if (sysroot_len > 0 && STREQ (m->mnt_dir, sysroot)) {
- if (add_string (&mounts, &size, &alloc, m->mnt_dir) == -1)
{
+ if (add_string (&mounts, m->mnt_dir) == -1) {
endmntent (fp);
return -1;
}
}
/* Or allow a mount directory like "/sysroot/...". */
if (STRPREFIX (m->mnt_dir, sysroot) &&
m->mnt_dir[sysroot_len] == '/') {
- if (add_string (&mounts, &size, &alloc, m->mnt_dir) == -1)
{
+ if (add_string (&mounts, m->mnt_dir) == -1) {
endmntent (fp);
return -1;
}
@@ -358,21 +357,22 @@ do_umount_all (void)
endmntent (fp);
- qsort (mounts, size, sizeof (char *), compare_longest_first);
+ if (mounts.size > 0)
+ qsort (mounts.argv, mounts.size, sizeof (char *), compare_longest_first);
/* Unmount them. */
- for (i = 0; i < size; ++i) {
- r = command (NULL, &err, "umount", mounts[i], NULL);
+ for (i = 0; i < mounts.size; ++i) {
+ r = command (NULL, &err, "umount", mounts.argv[i], NULL);
if (r == -1) {
- reply_with_error ("umount: %s: %s", mounts[i], err);
+ reply_with_error ("umount: %s: %s", mounts.argv[i], err);
free (err);
- free_stringslen (mounts, size);
+ free_stringslen (mounts.argv, mounts.size);
return -1;
}
free (err);
}
- free_stringslen (mounts, size);
+ free_stringslen (mounts.argv, mounts.size);
return 0;
}
--
1.7.9.1
Richard W.M. Jones
2012-Mar-13 08:26 UTC
[Libguestfs] [PATCH 2/2] Replace 'int' with 'size_t' passim.
From: "Richard W.M. Jones" <rjones at redhat.com>
Analyze all uses of 'int' in the code, and replace with 'size_t'
where
appropriate.
---
daemon/augeas.c | 2 +-
daemon/checksum.c | 2 +-
daemon/daemon.h | 2 +-
daemon/debug.c | 68 ++++++++++++++++++++--------------------
daemon/ext2.c | 6 ++--
daemon/file.c | 5 ++-
daemon/find.c | 9 +++--
daemon/guestfsd.c | 16 +++++----
daemon/lvm.c | 5 ++-
daemon/mount.c | 3 +-
daemon/proto.c | 6 ++--
daemon/readdir.c | 2 +-
daemon/xattr.c | 14 ++++----
fish/fish.c | 24 +++++++-------
fish/fish.h | 2 +-
fish/glob.c | 8 ++--
fish/inspect.c | 2 +-
fish/progress.c | 9 +++--
fish/rc.c | 3 +-
fish/tilde.c | 2 +-
fuse/guestmount.c | 2 +-
generator/generator_java.ml | 4 +-
generator/generator_python.ml | 6 ++--
inspector/virt-inspector.c | 8 ++--
ocaml/guestfs_c.c | 4 +-
src/proto.c | 2 +-
26 files changed, 113 insertions(+), 103 deletions(-)
diff --git a/daemon/augeas.c b/daemon/augeas.c
index 4a09f57..f03b819 100644
--- a/daemon/augeas.c
+++ b/daemon/augeas.c
@@ -339,7 +339,7 @@ do_aug_ls (const char *path)
{
char **matches;
char *buf;
- int len;
+ size_t len;
NEED_AUG (NULL);
diff --git a/daemon/checksum.c b/daemon/checksum.c
index 684f83f..be460f8 100644
--- a/daemon/checksum.c
+++ b/daemon/checksum.c
@@ -58,7 +58,7 @@ checksum (const char *csumtype, int fd)
const char *program;
char *out, *err;
int flags, r;
- int len;
+ size_t len;
program = program_of_csum (csumtype);
if (program == NULL) {
diff --git a/daemon/daemon.h b/daemon/daemon.h
index b973a7f..f3e77da 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -191,7 +191,7 @@ extern int cancel_receive (void);
* reply, then send_file_* for each FileOut parameter.
* Note max write size if GUESTFS_MAX_CHUNK_SIZE.
*/
-extern int send_file_write (const void *buf, int len);
+extern int send_file_write (const void *buf, size_t len);
extern int send_file_end (int cancel);
/* only call this if there is a FileOut parameter */
diff --git a/daemon/debug.c b/daemon/debug.c
index 4036af6..4e8d662 100644
--- a/daemon/debug.c
+++ b/daemon/debug.c
@@ -47,21 +47,21 @@
struct cmd {
const char *cmd;
- char * (*f) (const char *subcmd, int argc, char *const *const argv);
+ char * (*f) (const char *subcmd, size_t argc, char *const *const argv);
};
-static char *debug_help (const char *subcmd, int argc, char *const *const
argv);
-static char *debug_binaries (const char *subcmd, int argc, char *const *const
argv);
-static char *debug_core_pattern (const char *subcmd, int argc, char *const
*const argv);
-static char *debug_env (const char *subcmd, int argc, char *const *const argv);
-static char *debug_fds (const char *subcmd, int argc, char *const *const argv);
-static char *debug_ldd (const char *subcmd, int argc, char *const *const argv);
-static char *debug_ls (const char *subcmd, int argc, char *const *const argv);
-static char *debug_ll (const char *subcmd, int argc, char *const *const argv);
-static char *debug_progress (const char *subcmd, int argc, char *const *const
argv);
-static char *debug_qtrace (const char *subcmd, int argc, char *const *const
argv);
-static char *debug_segv (const char *subcmd, int argc, char *const *const
argv);
-static char *debug_sh (const char *subcmd, int argc, char *const *const argv);
+static char *debug_help (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_binaries (const char *subcmd, size_t argc, char *const
*const argv);
+static char *debug_core_pattern (const char *subcmd, size_t argc, char *const
*const argv);
+static char *debug_env (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_fds (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_ldd (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_ls (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_ll (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_progress (const char *subcmd, size_t argc, char *const
*const argv);
+static char *debug_qtrace (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_segv (const char *subcmd, size_t argc, char *const *const
argv);
+static char *debug_sh (const char *subcmd, size_t argc, char *const *const
argv);
static struct cmd cmds[] = {
{ "help", debug_help },
@@ -82,7 +82,7 @@ static struct cmd cmds[] = {
char *
do_debug (const char *subcmd, char *const *argv)
{
- int argc, i;
+ size_t argc, i;
for (i = argc = 0; argv[i] != NULL; ++i)
argc++;
@@ -97,9 +97,9 @@ do_debug (const char *subcmd, char *const *argv)
}
static char *
-debug_help (const char *subcmd, int argc, char *const *const argv)
+debug_help (const char *subcmd, size_t argc, char *const *const argv)
{
- int len, i;
+ size_t len, i;
char *r, *p;
r = strdup ("Commands supported:");
@@ -128,7 +128,7 @@ debug_help (const char *subcmd, int argc, char *const *const
argv)
/* Show open FDs. */
static char *
-debug_fds (const char *subcmd, int argc, char *const *const argv)
+debug_fds (const char *subcmd, size_t argc, char *const *const argv)
{
int r;
char *out;
@@ -196,7 +196,7 @@ debug_fds (const char *subcmd, int argc, char *const *const
argv)
/* Force a segfault in the daemon. */
static char *
-debug_segv (const char *subcmd, int argc, char *const *const argv)
+debug_segv (const char *subcmd, size_t argc, char *const *const argv)
{
/* http://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html
* "Dereferencing a NULL Pointer: contrary to popular belief,
@@ -214,16 +214,16 @@ debug_segv (const char *subcmd, int argc, char *const
*const argv)
* because it's not using the guest shell, and is not chrooted.
*/
static char *
-debug_sh (const char *subcmd, int argc, char *const *const argv)
+debug_sh (const char *subcmd, size_t argc, char *const *const argv)
{
+ char *cmd;
+ size_t len, i, j;
+
if (argc < 1) {
reply_with_error ("sh: expecting a command to run");
return NULL;
}
- char *cmd;
- int len, i, j;
-
/* guestfish splits the parameter(s) into a list of strings,
* and we have to reassemble them here. Not ideal. XXX
*/
@@ -268,7 +268,7 @@ debug_sh (const char *subcmd, int argc, char *const *const
argv)
/* Print the environment that commands get (by running external printenv). */
static char *
-debug_env (const char *subcmd, int argc, char *const *const argv)
+debug_env (const char *subcmd, size_t argc, char *const *const argv)
{
int r;
char *out, *err;
@@ -290,7 +290,7 @@ debug_env (const char *subcmd, int argc, char *const *const
argv)
* See tests/regressions/rhbz727178.sh
*/
static char *
-debug_binaries (const char *subcmd, int argc, char *const *const argv)
+debug_binaries (const char *subcmd, size_t argc, char *const *const argv)
{
int r;
char *out, *err;
@@ -318,7 +318,7 @@ debug_binaries (const char *subcmd, int argc, char *const
*const argv)
* See tests/regressions/rhbz727178.sh
*/
static char *
-debug_ldd (const char *subcmd, int argc, char *const *const argv)
+debug_ldd (const char *subcmd, size_t argc, char *const *const argv)
{
int r;
char *out, *err, *ret;
@@ -359,11 +359,11 @@ debug_ldd (const char *subcmd, int argc, char *const
*const argv)
/* List files in the appliance. */
static char *
-debug_ls (const char *subcmd, int argc, char *const *const argv)
+debug_ls (const char *subcmd, size_t argc, char *const *const argv)
{
- int len = count_strings (argv);
+ size_t len = count_strings (argv);
const char *cargv[len+3];
- int i;
+ size_t i;
cargv[0] = "ls";
cargv[1] = "-a";
@@ -389,11 +389,11 @@ debug_ls (const char *subcmd, int argc, char *const *const
argv)
/* List files in the appliance. */
static char *
-debug_ll (const char *subcmd, int argc, char *const *const argv)
+debug_ll (const char *subcmd, size_t argc, char *const *const argv)
{
- int len = count_strings (argv);
+ size_t len = count_strings (argv);
const char *cargv[len+3];
- int i;
+ size_t i;
cargv[0] = "ls";
cargv[1] = "-la";
@@ -419,7 +419,7 @@ debug_ll (const char *subcmd, int argc, char *const *const
argv)
/* Generate progress notification messages in order to test progress bars. */
static char *
-debug_progress (const char *subcmd, int argc, char *const *const argv)
+debug_progress (const char *subcmd, size_t argc, char *const *const argv)
{
if (argc < 1) {
error:
@@ -455,7 +455,7 @@ debug_progress (const char *subcmd, int argc, char *const
*const argv)
* crashes doesn't chroot.
*/
static char *
-debug_core_pattern (const char *subcmd, int argc, char *const *const argv)
+debug_core_pattern (const char *subcmd, size_t argc, char *const *const argv)
{
if (argc < 1) {
reply_with_error ("core_pattern: expecting a core pattern");
@@ -510,7 +510,7 @@ write_cb (void *fd_ptr, const void *buf, size_t len)
* directory in the libguestfs source tree.
*/
static char *
-debug_qtrace (const char *subcmd, int argc, char *const *const argv)
+debug_qtrace (const char *subcmd, size_t argc, char *const *const argv)
{
int enable;
diff --git a/daemon/ext2.c b/daemon/ext2.c
index 5defbc8..99d4574 100644
--- a/daemon/ext2.c
+++ b/daemon/ext2.c
@@ -463,7 +463,7 @@ do_mke2fs_J (const char *fstype, int blocksize, const char
*device,
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
- int len = strlen (journal);
+ size_t len = strlen (journal);
char jdev[len+32];
snprintf (jdev, len+32, "device=%s", journal);
@@ -500,7 +500,7 @@ do_mke2fs_JL (const char *fstype, int blocksize, const char
*device,
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
- int len = strlen (label);
+ size_t len = strlen (label);
char jdev[len+32];
snprintf (jdev, len+32, "device=LABEL=%s", label);
@@ -531,7 +531,7 @@ do_mke2fs_JU (const char *fstype, int blocksize, const char
*device,
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
- int len = strlen (uuid);
+ size_t len = strlen (uuid);
char jdev[len+32];
snprintf (jdev, len+32, "device=UUID=%s", uuid);
diff --git a/daemon/file.c b/daemon/file.c
index 161ea31..ef7b50c 100644
--- a/daemon/file.c
+++ b/daemon/file.c
@@ -89,7 +89,8 @@ char *
do_cat (const char *path)
{
int fd;
- int alloc, size, r, max;
+ size_t alloc, size, max;
+ ssize_t r;
char *buf, *buf2;
CHROOT_IN;
@@ -671,7 +672,7 @@ do_file (const char *path)
char *
do_zfile (const char *method, const char *path)
{
- int len;
+ size_t len;
const char *zcat;
char *cmd;
FILE *fp;
diff --git a/daemon/find.c b/daemon/find.c
index 014712e..833a391 100644
--- a/daemon/find.c
+++ b/daemon/find.c
@@ -31,9 +31,10 @@
#include "actions.h"
static int
-input_to_nul (FILE *fp, char *buf, int maxlen)
+input_to_nul (FILE *fp, char *buf, size_t maxlen)
{
- int i = 0, c;
+ size_t i = 0;
+ int c;
while (i < maxlen) {
c = fgetc (fp);
@@ -52,7 +53,9 @@ char **
do_find (const char *dir)
{
struct stat statbuf;
- int r, len, sysrootdirlen;
+ int r;
+ size_t sysrootdirlen;
+ size_t len;
char *cmd;
FILE *fp;
DECLARE_STRINGSBUF (ret);
diff --git a/daemon/guestfsd.c b/daemon/guestfsd.c
index 6174074..43f41df 100644
--- a/daemon/guestfsd.c
+++ b/daemon/guestfsd.c
@@ -364,7 +364,7 @@ char *
sysroot_path (const char *path)
{
char *r;
- int len = strlen (path) + sysroot_len + 1;
+ size_t len = strlen (path) + sysroot_len + 1;
r = malloc (len);
if (r == NULL)
@@ -497,7 +497,7 @@ sort_strings (char **argv, size_t len)
void
free_strings (char **argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
free (argv[argc]);
@@ -523,7 +523,8 @@ commandf (char **stdoutput, char **stderror, int flags,
const char *name, ...)
va_list args;
const char **argv;
char *s;
- int i, r;
+ size_t i;
+ int r;
/* Collect the command line arguments into an array. */
i = 2;
@@ -655,7 +656,7 @@ int
commandrvf (char **stdoutput, char **stderror, int flags,
char const* const *argv)
{
- int so_size = 0, se_size = 0;
+ size_t so_size = 0, se_size = 0;
int so_fd[2], se_fd[2];
int flag_copy_stdin = flags & COMMAND_FLAG_CHROOT_COPY_FILE_TO_STDIN;
int stdin_fd[2] = { -1, -1 };
@@ -894,9 +895,10 @@ commandrvf (char **stdoutput, char **stderror, int flags,
*stderror = q;
if (*stderror) {
(*stderror)[se_size] = '\0';
- se_size--;
- while (se_size >= 0 && (*stderror)[se_size] == '\n')
- (*stderror)[se_size--] = '\0';
+ while (se_size > 0 && (*stderror)[se_size-1] == '\n')
{
+ se_size--;
+ (*stderror)[se_size] = '\0';
+ }
}
}
diff --git a/daemon/lvm.c b/daemon/lvm.c
index 8b56921..7519756 100644
--- a/daemon/lvm.c
+++ b/daemon/lvm.c
@@ -45,8 +45,8 @@ static char **
convert_lvm_output (char *out, const char *prefix)
{
char *p, *pend;
- int len;
DECLARE_STRINGSBUF (ret);
+ size_t len;
char buf[256];
char *str;
@@ -317,7 +317,8 @@ int
do_lvm_remove_all (void)
{
char **xs;
- int i, r;
+ size_t i;
+ int r;
char *err;
/* Remove LVs. */
diff --git a/daemon/mount.c b/daemon/mount.c
index 5e74ce8..293353d 100644
--- a/daemon/mount.c
+++ b/daemon/mount.c
@@ -327,7 +327,8 @@ do_umount_all (void)
struct mntent *m;
DECLARE_STRINGSBUF (mounts);
char *err;
- int i, r;
+ size_t i;
+ int r;
/* NB: Eventually we should aim to parse /proc/self/mountinfo, but
* that requires custom parsing code.
diff --git a/daemon/proto.c b/daemon/proto.c
index ac62a6b..4bbe8f8 100644
--- a/daemon/proto.c
+++ b/daemon/proto.c
@@ -71,7 +71,7 @@ static struct timeval start_t;
static struct timeval last_progress_t;
/* Counts the number of progress notifications sent during this call. */
-static int count_progress;
+static size_t count_progress;
/* The daemon communications socket. */
static int sock;
@@ -477,13 +477,13 @@ static int send_chunk (const guestfs_chunk *);
/* Also check if the library sends us a cancellation message. */
int
-send_file_write (const void *buf, int len)
+send_file_write (const void *buf, size_t len)
{
guestfs_chunk chunk;
int cancel;
if (len > GUESTFS_MAX_CHUNK_SIZE) {
- fprintf (stderr, "guestfsd: send_file_write: len (%d) >
GUESTFS_MAX_CHUNK_SIZE (%d)\n",
+ fprintf (stderr, "guestfsd: send_file_write: len (%zu) >
GUESTFS_MAX_CHUNK_SIZE (%d)\n",
len, GUESTFS_MAX_CHUNK_SIZE);
return -1;
}
diff --git a/daemon/readdir.c b/daemon/readdir.c
index b8f5fea..f0ddd21 100644
--- a/daemon/readdir.c
+++ b/daemon/readdir.c
@@ -34,7 +34,7 @@ do_readdir (const char *path)
guestfs_int_dirent v;
DIR *dir;
struct dirent *d;
- int i;
+ size_t i;
ret = malloc (sizeof *ret);
if (ret == NULL) {
diff --git a/daemon/xattr.c b/daemon/xattr.c
index 92d0cf1..ca1b722 100644
--- a/daemon/xattr.c
+++ b/daemon/xattr.c
@@ -120,7 +120,7 @@ getxattrs (const char *path,
{
ssize_t len, vlen;
char *buf = NULL;
- int i, j;
+ size_t i, j;
guestfs_int_xattr_list *r = NULL;
CHROOT_IN;
@@ -155,7 +155,7 @@ getxattrs (const char *path,
* len. First count the strings.
*/
r->guestfs_int_xattr_list_len = 0;
- for (i = 0; i < len; i += strlen (&buf[i]) + 1)
+ for (i = 0; i < (size_t) len; i += strlen (&buf[i]) + 1)
r->guestfs_int_xattr_list_len++;
r->guestfs_int_xattr_list_val @@ -165,7 +165,7 @@ getxattrs (const char
*path,
goto error;
}
- for (i = 0, j = 0; i < len; i += strlen (&buf[i]) + 1, ++j) {
+ for (i = 0, j = 0; i < (size_t) len; i += strlen (&buf[i]) + 1, ++j) {
CHROOT_IN;
vlen = getxattr (path, &buf[i], NULL, 0);
CHROOT_OUT;
@@ -203,7 +203,7 @@ getxattrs (const char *path,
free (buf);
if (r) {
if (r->guestfs_int_xattr_list_val) {
- unsigned int k;
+ size_t k;
for (k = 0; k < r->guestfs_int_xattr_list_len; ++k) {
free (r->guestfs_int_xattr_list_val[k].attrname);
free (r->guestfs_int_xattr_list_val[k].attrval.attrval_val);
@@ -260,7 +260,7 @@ do_lxattrlist (const char *path, char *const *names)
char pathname[PATH_MAX];
size_t path_len = strlen (path);
guestfs_int_xattr_list *ret = NULL;
- int i, j;
+ size_t i, j;
size_t k, m, nr_attrs;
ssize_t len, vlen;
char *buf = NULL;
@@ -339,7 +339,7 @@ do_lxattrlist (const char *path, char *const *names)
* len. First count the strings.
*/
nr_attrs = 0;
- for (i = 0; i < len; i += strlen (&buf[i]) + 1)
+ for (i = 0; i < (size_t) len; i += strlen (&buf[i]) + 1)
nr_attrs++;
newptr @@ -363,7 +363,7 @@ do_lxattrlist (const char *path, char *const
*names)
entry[m].attrval.attrval_val = NULL;
}
- for (i = 0, j = 0; i < len; i += strlen (&buf[i]) + 1, ++j) {
+ for (i = 0, j = 0; i < (size_t) len; i += strlen (&buf[i]) + 1, ++j)
{
CHROOT_IN;
vlen = lgetxattr (pathname, &buf[i], NULL, 0);
CHROOT_OUT;
diff --git a/fish/fish.c b/fish/fish.c
index 8e3e9fb..8bfea32 100644
--- a/fish/fish.c
+++ b/fish/fish.c
@@ -60,9 +60,9 @@ static int launch (void);
static void interactive (void);
static void shell_script (void);
static void script (int prompt);
-static void cmdline (char *argv[], int optind, int argc);
+static void cmdline (char *argv[], size_t optind, size_t argc);
static struct parsed_command parse_command_line (char *buf, int
*exit_on_error_rtn);
-static int parse_quoted_string (char *p);
+static ssize_t parse_quoted_string (char *p);
static int execute_and_inline (const char *cmd, int exit_on_error);
static void error_cb (guestfs_h *g, void *data, const char *msg);
static void initialize_readline (void);
@@ -624,7 +624,7 @@ rl_gets (int prompt)
#endif /* HAVE_LIBREADLINE */
static char buf[8192];
- int len;
+ size_t len;
if (prompt) printf (FISH);
line_read = fgets (buf, sizeof buf, stdin);
@@ -701,7 +701,7 @@ parse_command_line (char *buf, int *exit_on_error_rtn)
{
struct parsed_command pcmd;
char *p, *pend;
- int len;
+ ssize_t len;
int tilde_candidate;
int r;
const size_t argv_len = sizeof pcmd.argv / sizeof pcmd.argv[0];
@@ -880,7 +880,7 @@ hexdigit (char d)
* with the true character. Since the string is returned in place,
* the escapes must make the string shorter.
*/
-static int
+static ssize_t
parse_quoted_string (char *p)
{
char *start = p;
@@ -991,7 +991,7 @@ execute_and_inline (const char *cmd, int
global_exit_on_error)
}
static void
-cmdline (char *argv[], int optind, int argc)
+cmdline (char *argv[], size_t optind, size_t argc)
{
const char *cmd;
char **params;
@@ -1040,7 +1040,7 @@ int
issue_command (const char *cmd, char *argv[], const char *pipecmd,
int rc_exit_on_error_flag)
{
- int argc;
+ size_t argc;
int stdout_saved_fd = -1;
int pid = 0;
int r;
@@ -1208,17 +1208,17 @@ error_cb (guestfs_h *g, void *data, const char *msg)
void
free_strings (char **argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
free (argv[argc]);
free (argv);
}
-int
+size_t
count_strings (char *const *argv)
{
- int c;
+ size_t c;
for (c = 0; argv[c]; ++c)
;
@@ -1228,7 +1228,7 @@ count_strings (char *const *argv)
void
print_strings (char *const *argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
printf ("%s\n", argv[argc]);
@@ -1237,7 +1237,7 @@ print_strings (char *const *argv)
void
print_table (char *const *argv)
{
- int i;
+ size_t i;
for (i = 0; argv[i] != NULL; i += 2)
printf ("%s: %s\n", argv[i], argv[i+1]);
diff --git a/fish/fish.h b/fish/fish.h
index 668202d..b4b05fe 100644
--- a/fish/fish.h
+++ b/fish/fish.h
@@ -69,7 +69,7 @@ extern int issue_command (const char *cmd, char *argv[], const
char *pipe, int r
extern void list_builtin_commands (void);
extern int display_builtin_command (const char *cmd);
extern void free_strings (char **argv);
-extern int count_strings (char *const *argv);
+extern size_t count_strings (char *const *argv);
extern void print_strings (char *const *argv);
extern void print_table (char *const *argv);
extern int is_true (const char *str);
diff --git a/fish/glob.c b/fish/glob.c
index 0141040..108eda3 100644
--- a/fish/glob.c
+++ b/fish/glob.c
@@ -28,7 +28,7 @@
/* A bit tricky because in the case where there are multiple
* paths we have to perform a Cartesian product.
*/
-static void glob_issue (char *cmd, size_t argc, char ***globs, int *posn, int
*count, int *r);
+static void glob_issue (char *cmd, size_t argc, char ***globs, size_t *posn,
size_t *count, int *r);
int
run_glob (const char *cmd, size_t argc, char *argv[])
@@ -44,8 +44,8 @@ run_glob (const char *cmd, size_t argc, char *argv[])
* argv[1-].
*/
char **globs[argc];
- int posn[argc];
- int count[argc];
+ size_t posn[argc];
+ size_t count[argc];
size_t i;
int r = 0;
@@ -131,7 +131,7 @@ run_glob (const char *cmd, size_t argc, char *argv[])
static void
glob_issue (char *cmd, size_t argc,
- char ***globs, int *posn, int *count,
+ char ***globs, size_t *posn, size_t *count,
int *r)
{
size_t i;
diff --git a/fish/inspect.c b/fish/inspect.c
index f93367b..3358cd4 100644
--- a/fish/inspect.c
+++ b/fish/inspect.c
@@ -36,7 +36,7 @@ static char *root = NULL;
static void
free_strings (char **argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
free (argv[argc]);
diff --git a/fish/progress.c b/fish/progress.c
index 6c30e95..c296f40 100644
--- a/fish/progress.c
+++ b/fish/progress.c
@@ -88,7 +88,7 @@ rmsd_get_standard_deviation (const struct rmsd *r)
struct progress_bar {
double start; /* start time of command */
- int count; /* number of progress notifications per cmd */
+ size_t count; /* number of progress notifications per cmd */
struct rmsd rmsd; /* running mean and standard deviation */
int have_terminfo;
int utf8_mode;
@@ -154,7 +154,7 @@ progress_bar_reset (struct progress_bar *bar)
}
static const char *
-spinner (struct progress_bar *bar, int count)
+spinner (struct progress_bar *bar, size_t count)
{
/* Choice of unicode spinners.
*
@@ -262,7 +262,8 @@ void
progress_bar_set (struct progress_bar *bar,
uint64_t position, uint64_t total)
{
- int i, cols, pulse_mode;
+ size_t i, cols;
+ int pulse_mode;
double ratio;
const char *s_open, *s_dot, *s_dash, *s_close;
@@ -307,7 +308,7 @@ progress_bar_set (struct progress_bar *bar,
fputs (s_open, stdout);
if (!pulse_mode) {
- int dots = ratio * (double) (cols - COLS_OVERHEAD);
+ size_t dots = ratio * (double) (cols - COLS_OVERHEAD);
for (i = 0; i < dots; ++i)
fputs (s_dot, stdout);
diff --git a/fish/rc.c b/fish/rc.c
index 4c119f7..52a2623 100644
--- a/fish/rc.c
+++ b/fish/rc.c
@@ -36,7 +36,8 @@
#include "rc_protocol.h"
static void
-create_sockpath (pid_t pid, char *sockpath, int len, struct sockaddr_un *addr)
+create_sockpath (pid_t pid, char *sockpath, size_t len,
+ struct sockaddr_un *addr)
{
char dir[128];
uid_t euid = geteuid ();
diff --git a/fish/tilde.c b/fish/tilde.c
index 8ee1437..9267966 100644
--- a/fish/tilde.c
+++ b/fish/tilde.c
@@ -78,7 +78,7 @@ static char *
expand_home (char *orig, const char *append)
{
const char *home;
- int len;
+ size_t len;
char *str;
home = getenv ("HOME");
diff --git a/fuse/guestmount.c b/fuse/guestmount.c
index a9bf4e3..f6c3463 100644
--- a/fuse/guestmount.c
+++ b/fuse/guestmount.c
@@ -990,7 +990,7 @@ main (int argc, char *argv[])
int option_index;
struct sigaction sa;
- int fuse_argc = 0;
+ size_t fuse_argc = 0;
const char **fuse_argv = NULL;
#define ADD_FUSE_ARG(str) \
diff --git a/generator/generator_java.ml b/generator/generator_java.ml
index 3a13052..d95bd59 100644
--- a/generator/generator_java.ml
+++ b/generator/generator_java.ml
@@ -683,7 +683,7 @@ and generate_java_struct_return typ jtyp cols pr
" }\n";
| name, FBuffer ->
pr " {\n";
- pr " int len = r->%s_len;\n" name;
+ pr " size_t len = r->%s_len;\n" name;
pr " char s[len+1];\n";
pr " memcpy (s, r->%s, len);\n" name;
pr " s[len] = 0;\n";
@@ -726,7 +726,7 @@ and generate_java_struct_list_return typ jtyp cols
pr " }\n";
| name, FBuffer ->
pr " {\n";
- pr " int len = r->val[i].%s_len;\n" name;
+ pr " size_t len = r->val[i].%s_len;\n" name;
pr " char s[len+1];\n";
pr " memcpy (s, r->val[i].%s, len);\n" name;
pr " s[len] = 0;\n";
diff --git a/generator/generator_python.ml b/generator/generator_python.ml
index 7d8513a..fbf3151 100644
--- a/generator/generator_python.ml
+++ b/generator/generator_python.ml
@@ -89,7 +89,7 @@ static PyObject *
put_string_list (char * const * const argv)
{
PyObject *list;
- int argc, i;
+ size_t argc, i;
for (argc = 0; argv[argc] != NULL; ++argc)
;
@@ -110,7 +110,7 @@ static PyObject *
put_table (char * const * const argv)
{
PyObject *list, *item;
- int argc, i;
+ size_t argc, i;
for (argc = 0; argv[argc] != NULL; ++argc)
;
@@ -134,7 +134,7 @@ put_table (char * const * const argv)
static void
free_strings (char **argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
free (argv[argc]);
diff --git a/inspector/virt-inspector.c b/inspector/virt-inspector.c
index 269e51d..103a61e 100644
--- a/inspector/virt-inspector.c
+++ b/inspector/virt-inspector.c
@@ -62,7 +62,7 @@ static void output_drive_mappings (xmlTextWriterPtr xo, char
*root);
static void output_applications (xmlTextWriterPtr xo, char *root);
static void canonicalize (char *dev);
static void free_strings (char **argv);
-static int count_strings (char *const*argv);
+static size_t count_strings (char *const*argv);
static void do_xpath (const char *query);
static inline char *
@@ -790,17 +790,17 @@ canonicalize (char *dev)
static void
free_strings (char **argv)
{
- int argc;
+ size_t argc;
for (argc = 0; argv[argc] != NULL; ++argc)
free (argv[argc]);
free (argv);
}
-static int
+static size_t
count_strings (char *const *argv)
{
- int c;
+ size_t c;
for (c = 0; argv[c]; ++c)
;
diff --git a/ocaml/guestfs_c.c b/ocaml/guestfs_c.c
index c4b2a96..cfbe1cc 100644
--- a/ocaml/guestfs_c.c
+++ b/ocaml/guestfs_c.c
@@ -190,7 +190,7 @@ ocaml_guestfs_strings_val (guestfs_h *g, value sv)
{
CAMLparam1 (sv);
char **r;
- unsigned int i;
+ size_t i;
r = guestfs_safe_malloc (g, sizeof (char *) * (Wosize_val (sv) + 1));
for (i = 0; i < Wosize_val (sv); ++i)
@@ -204,7 +204,7 @@ ocaml_guestfs_strings_val (guestfs_h *g, value sv)
void
ocaml_guestfs_free_strings (char **argv)
{
- unsigned int i;
+ size_t i;
for (i = 0; argv[i] != NULL; ++i)
free (argv[i]);
diff --git a/src/proto.c b/src/proto.c
index 1ab8d18..c9ddaca 100644
--- a/src/proto.c
+++ b/src/proto.c
@@ -241,7 +241,7 @@ static int
read_log_message_or_eof (guestfs_h *g, int fd, int error_if_eof)
{
char buf[BUFSIZ];
- int n;
+ ssize_t n;
#if 0
debug (g, "read_log_message_or_eof: %p g->state = %d, fd = %d",
--
1.7.9.1
Seemingly Similar Threads
- [PATCH 1/2] daemon: free the string on stringsbuf add failure
- [PATCH 1/4] daemon: introduce free_stringsbuf
- [PATCH 00/13] Fix errors found using Coverity static analyzer.
- [PATCH 0/6 v2] [FOR COMMENTS ONLY] Rework inspection.
- [PATCH v3 1/2] Modify the function: analyze_line, make it more flexible