Maros Zatko
2015-Mar-03 20:55 UTC
[Libguestfs] [PATCH v2] RFE: journal reader in guestfish
This implements new guestfish only command called journal-view. There seems to be a minor issue when user wants to run it through pager (more) and wants cancel it. User will end up with stuck guestfish until journal-view transfers all journal items. Output is now configurable, it's the same format as virt-log has, since both uses same code now. Maros Zatko (1): fish: add journal-view command cat/Makefile.am | 1 + cat/log.c | 112 +------------------------------- fish/Makefile.am | 1 + fish/fish.h | 3 + fish/journal.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++ generator/actions.ml | 9 +++ 6 files changed, 194 insertions(+), 110 deletions(-) create mode 100644 fish/journal.c -- 1.9.3
Lets user view journald log from VM in a similar format as journalctl uses.
Makes virt-log use the same code as guestfish for journal-view.
Fixes RFE: journal reader in guestfish (RHBZ#988100)
---
cat/Makefile.am | 1 +
cat/log.c | 112 +-------------------------------
fish/Makefile.am | 1 +
fish/fish.h | 3 +
fish/journal.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++
generator/actions.ml | 9 +++
6 files changed, 194 insertions(+), 110 deletions(-)
create mode 100644 fish/journal.c
diff --git a/cat/Makefile.am b/cat/Makefile.am
index d0db6fa..d472100 100644
--- a/cat/Makefile.am
+++ b/cat/Makefile.am
@@ -38,6 +38,7 @@ bin_PROGRAMS = virt-cat virt-filesystems virt-log virt-ls
SHARED_SOURCE_FILES = \
../fish/domain.c \
../fish/inspect.c \
+ ../fish/journal.c \
../fish/keys.c \
../fish/options.h \
../fish/options.c \
diff --git a/cat/log.c b/cat/log.c
index 616baed..cd51c50 100644
--- a/cat/log.c
+++ b/cat/log.c
@@ -273,128 +273,20 @@ do_log (void)
return 0;
}
-/* Find the value of the named field from the list of attributes. If
- * not found, returns NULL (not an error). If found, returns a
- * pointer to the field, and the length of the field. NOTE: The field
- * is NOT \0-terminated, so you have to print it using "%.*s".
- *
- * There may be multiple fields with the same name. In this case, the
- * function returns the first entry.
- */
-static const char *
-get_journal_field (const struct guestfs_xattr_list *xattrs, const char *name,
- size_t *len_rtn)
-{
- uint32_t i;
-
- for (i = 0; i < xattrs->len; ++i) {
- if (STREQ (name, xattrs->val[i].attrname)) {
- *len_rtn = xattrs->val[i].attrval_len;
- return xattrs->val[i].attrval;
- }
- }
-
- return NULL; /* not found */
-}
-
-static const char *const log_level_table[] = {
- [LOG_EMERG] = "emerg",
- [LOG_ALERT] = "alert",
- [LOG_CRIT] = "crit",
- [LOG_ERR] = "err",
- [LOG_WARNING] = "warning",
- [LOG_NOTICE] = "notice",
- [LOG_INFO] = "info",
- [LOG_DEBUG] = "debug"
-};
-
static int
do_log_journal (void)
{
int r;
- unsigned errors = 0;
-
if (guestfs_journal_open (g, JOURNAL_DIR) == -1)
return -1;
- while ((r = guestfs_journal_next (g)) > 0) {
- CLEANUP_FREE_XATTR_LIST struct guestfs_xattr_list *xattrs = NULL;
- const char *priority_str, *identifier, *comm, *pid, *message;
- size_t priority_len, identifier_len, comm_len, pid_len, message_len;
- int priority = LOG_INFO;
- int64_t ts;
-
- /* The question is what fields to display. We should probably
- * make this configurable, but for now use the "short" format
from
- * journalctl. (XXX)
- */
-
- xattrs = guestfs_journal_get (g);
- if (xattrs == NULL)
- return -1;
-
- ts = guestfs_journal_get_realtime_usec (g); /* error checked below */
-
- priority_str = get_journal_field (xattrs, "PRIORITY",
&priority_len);
- //hostname = get_journal_field (xattrs, "_HOSTNAME",
&hostname_len);
- identifier = get_journal_field (xattrs, "SYSLOG_IDENTIFIER",
- &identifier_len);
- comm = get_journal_field (xattrs, "_COMM", &comm_len);
- pid = get_journal_field (xattrs, "_PID", &pid_len);
- message = get_journal_field (xattrs, "MESSAGE",
&message_len);
-
- /* Timestamp. */
- if (ts >= 0) {
- char buf[64];
- time_t t = ts / 1000000;
- struct tm tm;
-
- if (strftime (buf, sizeof buf, "%b %d %H:%M:%S",
- localtime_r (&t, &tm)) <= 0) {
- fprintf (stderr, _("%s: could not format journal entry
timestamp\n"),
- guestfs_int_program_name);
- errors++;
- continue;
- }
- fputs (buf, stdout);
- }
-
- /* Hostname. */
- /* We don't print this because it is assumed each line from the
- * guest will have the same hostname. (XXX)
- */
- //if (hostname)
- // printf (" %.*s", (int) hostname_len, hostname);
-
- /* Identifier. */
- if (identifier)
- printf (" %.*s", (int) identifier_len, identifier);
- else if (comm)
- printf (" %.*s", (int) comm_len, comm);
-
- /* PID */
- if (pid)
- printf ("[%.*s]", (int) pid_len, pid);
-
- /* Log level. */
- if (priority_str && *priority_str >= '0' &&
*priority_str <= '7')
- priority = *priority_str - '0';
-
- printf (" %s:", log_level_table[priority]);
-
- /* Message. */
- if (message)
- printf (" %.*s", (int) message_len, message);
-
- printf ("\n");
- }
- if (r == -1) /* error from guestfs_journal_next */
+ if (r = journal_view ("~3axv") == -1)
return -1;
if (guestfs_journal_close (g) == -1)
return -1;
- return errors > 0 ? -1 : 0;
+ return r;
}
static int
diff --git a/fish/Makefile.am b/fish/Makefile.am
index c4b82ae..e4b4fcf 100644
--- a/fish/Makefile.am
+++ b/fish/Makefile.am
@@ -94,6 +94,7 @@ guestfish_SOURCES = \
glob.c \
help.c \
hexedit.c \
+ journal.c \
lcd.c \
man.c \
more.c \
diff --git a/fish/fish.h b/fish/fish.h
index df22e34..8ae6454 100644
--- a/fish/fish.h
+++ b/fish/fish.h
@@ -104,6 +104,9 @@ extern int rc_remote (int pid, const char *cmd, size_t argc,
char *argv[],
/* in tilde.c */
extern char *try_tilde_expansion (char *path);
+/* in journal.c */
+extern int journal_view (const char *fields);
+
/* This should just list all the built-in commands so they can
* be added to the generated auto-completion code.
*/
diff --git a/fish/journal.c b/fish/journal.c
new file mode 100644
index 0000000..8472445
--- /dev/null
+++ b/fish/journal.c
@@ -0,0 +1,178 @@
+/* guestfish - guest filesystem shell
+ * Copyright (C) 2009-2015 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <libintl.h>
+#include <time.h>
+#include <syslog.h>
+
+#include "fish.h"
+
+/* Find the value of the named field from the list of attributes. If
+ * not found, returns NULL (not an error). If found, returns a
+ * pointer to the field, and the length of the field. NOTE: The field
+ * is NOT \0-terminated, so you have to print it using "%.*s".
+ *
+ * There may be multiple fields with the same name. In this case, the
+ * function returns the first entry.
+ */
+static const char *
+get_journal_field (const struct guestfs_xattr_list *xattrs, const char *name,
+ size_t *len_rtn)
+{
+ uint32_t i;
+
+ for (i = 0; i < xattrs->len; ++i) {
+ if (STREQ (name, xattrs->val[i].attrname)) {
+ *len_rtn = xattrs->val[i].attrval_len;
+ return xattrs->val[i].attrval;
+ }
+ }
+
+ return NULL; /* not found */
+}
+
+static const char *const log_level_table[] = {
+ [LOG_EMERG] = "emerg",
+ [LOG_ALERT] = "alert",
+ [LOG_CRIT] = "crit",
+ [LOG_ERR] = "err",
+ [LOG_WARNING] = "warning",
+ [LOG_NOTICE] = "notice",
+ [LOG_INFO] = "info",
+ [LOG_DEBUG] = "debug"
+};
+
+static const char *const log_fields[] = {
+ /* Trusted fields */
+ "a", "_PID",
+ "b", "_UID",
+ "c", "_GID",
+ "d", "_COMM",
+ "e", "_EXE",
+ "f", "_CMDLINE",
+ "g", "_CAP_EFFECTIVE",
+ "h", "_AUDIT_SESSION",
+ "i", "_AUDIT_LOGINUID",
+ "j", "_SYSTEMD_CGROUP",
+ "k", "_SYSTEMD_SESSION",
+ "l", "_SYSTEMD_UNIT",
+ "m", "_SYSTEMD_USER_UNIT",
+ "n", "_SYSTEMD_OWNER_UID",
+ "o", "_SYSTEMD_SLICE",
+ "p", "_SELINUX_CONTEXT",
+ "q", "_SOURCE_REALTIME_TIMESTAMP",
+ "r", "_BOOT_ID",
+ "s", "_MACHINE_ID",
+ "t", "_HOSTNAME",
+ "u", "_TRANSPORT",
+ /* User fields */
+ "v", "MESSAGE",
+ "w", "MESSAGE_ID",
+ "x", "PRIORITY",
+ "y", "CODE_FILE",
+ "z", "CODE_LINE",
+ "0", "CODE_FUNC",
+ "1", "ERRNO",
+ "2", "SYSLOG_FACILITY",
+ "3", "SYSLOG_IDENTIFIER",
+ "4", "SYSLOG_PID"
+/* "~" means timestamp */
+};
+
+static const char *
+lookup_field (char field)
+{
+ size_t i = 0;
+ for (i = 0; i < sizeof log_fields / sizeof *log_fields; i += 2) {
+ if (field == log_fields[i][0])
+ return log_fields[i+1];
+ }
+ return NULL;
+}
+
+/* Fetch and print journal fields in specified order
+ * default is '~3axv'
+ */
+int
+journal_view (const char *fields)
+{
+ int r;
+ int errors = 0;
+ while ((r = guestfs_journal_next(g)) > 0) {
+ CLEANUP_FREE_XATTR_LIST struct guestfs_xattr_list *xattrs = NULL;
+ int64_t ts;
+ int priority = LOG_INFO;
+
+ xattrs = guestfs_journal_get (g);
+ if (xattrs == NULL)
+ return -1;
+
+ size_t f_id = 0;
+ for (f_id = 0; f_id < strlen (fields); ++f_id) {
+ if (fields[f_id] == '~') {
+ ts = guestfs_journal_get_realtime_usec (g);
+ /* Timestamp. */
+ if (ts >= 0) {
+ char buf[64];
+ time_t t = ts / 1000000;
+ struct tm tm;
+
+ if (strftime (buf, sizeof buf, "%b %d %H:%M:%S",
+ localtime_r (&t, &tm)) <= 0) {
+ fprintf (stderr, _("could not format journal entry
timestamp\n"));
+ errors++;
+ continue;
+ }
+ fputs (buf, stdout);
+ }
+ }
+
+ const char *field_name, *field_val;
+ size_t field_len;
+ if ((field_name = lookup_field (fields[f_id]))) {
+ field_val = get_journal_field (xattrs, field_name, &field_len);
+ if (STREQ (field_name, "PRIORITY")) {
+ if (field_val && *field_val >= '0' &&
*field_val <= '7')
+ priority = *field_val - '0';
+ printf (" %s:", log_level_table[priority]);
+ } else if (field_val) {
+ printf (" %.*s", (int)field_len, field_val);
+ }
+ }
+ }
+ printf ("\n");
+ }
+
+ return errors > 0 ? -1 : 0;
+}
+
+int
+run_journal_view (const char *cmd, size_t argc, char *argv[])
+{
+ if (argc > 0)
+ return journal_view (argv[0]);
+ return journal_view ("~3axv");
+}
diff --git a/generator/actions.ml b/generator/actions.ml
index c995787..c31b9a8 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -12667,6 +12667,15 @@ environment variable.
See also L</hexdump>." };
{ defaults with
+ name = "journal_view";
+ shortdesc = "view journald log";
+ longdesc = " journal-view
+
+View journald log in format similar to journalctl.
+
+Use C<journal-open> first." };
+
+ { defaults with
name = "lcd";
shortdesc = "change working directory";
longdesc = " lcd directory
--
1.9.3
Richard W.M. Jones
2015-Mar-05 12:41 UTC
Re: [Libguestfs] [PATCH v2] fish: add journal-view command
On Tue, Mar 03, 2015 at 09:55:06PM +0100, Maros Zatko wrote:> Lets user view journald log from VM in a similar format as journalctl uses. > > Makes virt-log use the same code as guestfish for journal-view. > > Fixes RFE: journal reader in guestfish (RHBZ#988100) > --- > cat/Makefile.am | 1 + > cat/log.c | 112 +------------------------------- > fish/Makefile.am | 1 + > fish/fish.h | 3 + > fish/journal.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++ > generator/actions.ml | 9 +++ > 6 files changed, 194 insertions(+), 110 deletions(-) > create mode 100644 fish/journal.c > > diff --git a/cat/Makefile.am b/cat/Makefile.am > index d0db6fa..d472100 100644 > --- a/cat/Makefile.am > +++ b/cat/Makefile.am > @@ -38,6 +38,7 @@ bin_PROGRAMS = virt-cat virt-filesystems virt-log virt-ls > SHARED_SOURCE_FILES = \ > ../fish/domain.c \ > ../fish/inspect.c \ > + ../fish/journal.c \ > ../fish/keys.c \ > ../fish/options.h \ > ../fish/options.c \ > diff --git a/cat/log.c b/cat/log.c > index 616baed..cd51c50 100644 > --- a/cat/log.c > +++ b/cat/log.c > @@ -273,128 +273,20 @@ do_log (void) > return 0; > } > > -/* Find the value of the named field from the list of attributes. If > - * not found, returns NULL (not an error). If found, returns a > - * pointer to the field, and the length of the field. NOTE: The field > - * is NOT \0-terminated, so you have to print it using "%.*s". > - * > - * There may be multiple fields with the same name. In this case, the > - * function returns the first entry. > - */ > -static const char * > -get_journal_field (const struct guestfs_xattr_list *xattrs, const char *name, > - size_t *len_rtn) > -{ > - uint32_t i; > - > - for (i = 0; i < xattrs->len; ++i) { > - if (STREQ (name, xattrs->val[i].attrname)) { > - *len_rtn = xattrs->val[i].attrval_len; > - return xattrs->val[i].attrval; > - } > - } > - > - return NULL; /* not found */ > -} > - > -static const char *const log_level_table[] = { > - [LOG_EMERG] = "emerg", > - [LOG_ALERT] = "alert", > - [LOG_CRIT] = "crit", > - [LOG_ERR] = "err", > - [LOG_WARNING] = "warning", > - [LOG_NOTICE] = "notice", > - [LOG_INFO] = "info", > - [LOG_DEBUG] = "debug" > -}; > - > static int > do_log_journal (void) > { > int r; > - unsigned errors = 0; > - > if (guestfs_journal_open (g, JOURNAL_DIR) == -1) > return -1; > > - while ((r = guestfs_journal_next (g)) > 0) { > - CLEANUP_FREE_XATTR_LIST struct guestfs_xattr_list *xattrs = NULL; > - const char *priority_str, *identifier, *comm, *pid, *message; > - size_t priority_len, identifier_len, comm_len, pid_len, message_len; > - int priority = LOG_INFO; > - int64_t ts; > - > - /* The question is what fields to display. We should probably > - * make this configurable, but for now use the "short" format from > - * journalctl. (XXX) > - */ > - > - xattrs = guestfs_journal_get (g); > - if (xattrs == NULL) > - return -1; > - > - ts = guestfs_journal_get_realtime_usec (g); /* error checked below */ > - > - priority_str = get_journal_field (xattrs, "PRIORITY", &priority_len); > - //hostname = get_journal_field (xattrs, "_HOSTNAME", &hostname_len); > - identifier = get_journal_field (xattrs, "SYSLOG_IDENTIFIER", > - &identifier_len); > - comm = get_journal_field (xattrs, "_COMM", &comm_len); > - pid = get_journal_field (xattrs, "_PID", &pid_len); > - message = get_journal_field (xattrs, "MESSAGE", &message_len); > - > - /* Timestamp. */ > - if (ts >= 0) { > - char buf[64]; > - time_t t = ts / 1000000; > - struct tm tm; > - > - if (strftime (buf, sizeof buf, "%b %d %H:%M:%S", > - localtime_r (&t, &tm)) <= 0) { > - fprintf (stderr, _("%s: could not format journal entry timestamp\n"), > - guestfs_int_program_name); > - errors++; > - continue; > - } > - fputs (buf, stdout); > - } > - > - /* Hostname. */ > - /* We don't print this because it is assumed each line from the > - * guest will have the same hostname. (XXX) > - */ > - //if (hostname) > - // printf (" %.*s", (int) hostname_len, hostname); > - > - /* Identifier. */ > - if (identifier) > - printf (" %.*s", (int) identifier_len, identifier); > - else if (comm) > - printf (" %.*s", (int) comm_len, comm); > - > - /* PID */ > - if (pid) > - printf ("[%.*s]", (int) pid_len, pid); > - > - /* Log level. */ > - if (priority_str && *priority_str >= '0' && *priority_str <= '7') > - priority = *priority_str - '0'; > - > - printf (" %s:", log_level_table[priority]); > - > - /* Message. */ > - if (message) > - printf (" %.*s", (int) message_len, message); > - > - printf ("\n"); > - } > - if (r == -1) /* error from guestfs_journal_next */ > + if (r = journal_view ("~3axv") == -1)Seems as if this function isn't prototyped anywhere. If you use `./configure --enable-werror' it will turn warnings into errors. log.c: In function 'do_log_journal': CC virt_ls-journal.o log.c:283:11: error: implicit declaration of function 'journal_view' [-Werror=implicit-function-declaration] if (r = journal_view ("~3axv") == -1) ^ log.c:283:3: error: nested extern declaration of 'journal_view' [-Werror=nested-externs] if (r = journal_view ("~3axv") == -1) ^ log.c:283:3: error: suggest parentheses around assignment used as truth value [-Werror=parentheses] Rich.> return -1; > > if (guestfs_journal_close (g) == -1) > return -1; > > - return errors > 0 ? -1 : 0; > + return r; > } > > static int > diff --git a/fish/Makefile.am b/fish/Makefile.am > index c4b82ae..e4b4fcf 100644 > --- a/fish/Makefile.am > +++ b/fish/Makefile.am > @@ -94,6 +94,7 @@ guestfish_SOURCES = \ > glob.c \ > help.c \ > hexedit.c \ > + journal.c \ > lcd.c \ > man.c \ > more.c \ > diff --git a/fish/fish.h b/fish/fish.h > index df22e34..8ae6454 100644 > --- a/fish/fish.h > +++ b/fish/fish.h > @@ -104,6 +104,9 @@ extern int rc_remote (int pid, const char *cmd, size_t argc, char *argv[], > /* in tilde.c */ > extern char *try_tilde_expansion (char *path); > > +/* in journal.c */ > +extern int journal_view (const char *fields); > + > /* This should just list all the built-in commands so they can > * be added to the generated auto-completion code. > */ > diff --git a/fish/journal.c b/fish/journal.c > new file mode 100644 > index 0000000..8472445 > --- /dev/null > +++ b/fish/journal.c > @@ -0,0 +1,178 @@ > +/* guestfish - guest filesystem shell > + * Copyright (C) 2009-2015 Red Hat Inc. > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; either version 2 of the License, or > + * (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, write to the Free Software > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. > + */ > + > +#include <config.h> > + > +#include <stdio.h> > +#include <stdlib.h> > +#include <string.h> > +#include <unistd.h> > +#include <fcntl.h> > +#include <inttypes.h> > +#include <libintl.h> > +#include <time.h> > +#include <syslog.h> > + > +#include "fish.h" > + > +/* Find the value of the named field from the list of attributes. If > + * not found, returns NULL (not an error). If found, returns a > + * pointer to the field, and the length of the field. NOTE: The field > + * is NOT \0-terminated, so you have to print it using "%.*s". > + * > + * There may be multiple fields with the same name. In this case, the > + * function returns the first entry. > + */ > +static const char * > +get_journal_field (const struct guestfs_xattr_list *xattrs, const char *name, > + size_t *len_rtn) > +{ > + uint32_t i; > + > + for (i = 0; i < xattrs->len; ++i) { > + if (STREQ (name, xattrs->val[i].attrname)) { > + *len_rtn = xattrs->val[i].attrval_len; > + return xattrs->val[i].attrval; > + } > + } > + > + return NULL; /* not found */ > +} > + > +static const char *const log_level_table[] = { > + [LOG_EMERG] = "emerg", > + [LOG_ALERT] = "alert", > + [LOG_CRIT] = "crit", > + [LOG_ERR] = "err", > + [LOG_WARNING] = "warning", > + [LOG_NOTICE] = "notice", > + [LOG_INFO] = "info", > + [LOG_DEBUG] = "debug" > +}; > + > +static const char *const log_fields[] = { > + /* Trusted fields */ > + "a", "_PID", > + "b", "_UID", > + "c", "_GID", > + "d", "_COMM", > + "e", "_EXE", > + "f", "_CMDLINE", > + "g", "_CAP_EFFECTIVE", > + "h", "_AUDIT_SESSION", > + "i", "_AUDIT_LOGINUID", > + "j", "_SYSTEMD_CGROUP", > + "k", "_SYSTEMD_SESSION", > + "l", "_SYSTEMD_UNIT", > + "m", "_SYSTEMD_USER_UNIT", > + "n", "_SYSTEMD_OWNER_UID", > + "o", "_SYSTEMD_SLICE", > + "p", "_SELINUX_CONTEXT", > + "q", "_SOURCE_REALTIME_TIMESTAMP", > + "r", "_BOOT_ID", > + "s", "_MACHINE_ID", > + "t", "_HOSTNAME", > + "u", "_TRANSPORT", > + /* User fields */ > + "v", "MESSAGE", > + "w", "MESSAGE_ID", > + "x", "PRIORITY", > + "y", "CODE_FILE", > + "z", "CODE_LINE", > + "0", "CODE_FUNC", > + "1", "ERRNO", > + "2", "SYSLOG_FACILITY", > + "3", "SYSLOG_IDENTIFIER", > + "4", "SYSLOG_PID" > +/* "~" means timestamp */ > +}; > + > +static const char * > +lookup_field (char field) > +{ > + size_t i = 0; > + for (i = 0; i < sizeof log_fields / sizeof *log_fields; i += 2) { > + if (field == log_fields[i][0]) > + return log_fields[i+1]; > + } > + return NULL; > +} > + > +/* Fetch and print journal fields in specified order > + * default is '~3axv' > + */ > +int > +journal_view (const char *fields) > +{ > + int r; > + int errors = 0; > + while ((r = guestfs_journal_next(g)) > 0) { > + CLEANUP_FREE_XATTR_LIST struct guestfs_xattr_list *xattrs = NULL; > + int64_t ts; > + int priority = LOG_INFO; > + > + xattrs = guestfs_journal_get (g); > + if (xattrs == NULL) > + return -1; > + > + size_t f_id = 0; > + for (f_id = 0; f_id < strlen (fields); ++f_id) { > + if (fields[f_id] == '~') { > + ts = guestfs_journal_get_realtime_usec (g); > + /* Timestamp. */ > + if (ts >= 0) { > + char buf[64]; > + time_t t = ts / 1000000; > + struct tm tm; > + > + if (strftime (buf, sizeof buf, "%b %d %H:%M:%S", > + localtime_r (&t, &tm)) <= 0) { > + fprintf (stderr, _("could not format journal entry timestamp\n")); > + errors++; > + continue; > + } > + fputs (buf, stdout); > + } > + } > + > + const char *field_name, *field_val; > + size_t field_len; > + if ((field_name = lookup_field (fields[f_id]))) { > + field_val = get_journal_field (xattrs, field_name, &field_len); > + if (STREQ (field_name, "PRIORITY")) { > + if (field_val && *field_val >= '0' && *field_val <= '7') > + priority = *field_val - '0'; > + printf (" %s:", log_level_table[priority]); > + } else if (field_val) { > + printf (" %.*s", (int)field_len, field_val); > + } > + } > + } > + printf ("\n"); > + } > + > + return errors > 0 ? -1 : 0; > +} > + > +int > +run_journal_view (const char *cmd, size_t argc, char *argv[]) > +{ > + if (argc > 0) > + return journal_view (argv[0]); > + return journal_view ("~3axv"); > +} > diff --git a/generator/actions.ml b/generator/actions.ml > index c995787..c31b9a8 100644 > --- a/generator/actions.ml > +++ b/generator/actions.ml > @@ -12667,6 +12667,15 @@ environment variable. > See also L</hexdump>." }; > > { defaults with > + name = "journal_view"; > + shortdesc = "view journald log"; > + longdesc = " journal-view > + > +View journald log in format similar to journalctl. > + > +Use C<journal-open> first." }; > + > + { defaults with > name = "lcd"; > shortdesc = "change working directory"; > longdesc = " lcd directory > -- > 1.9.3 > > _______________________________________________ > Libguestfs mailing list > Libguestfs@redhat.com > https://www.redhat.com/mailman/listinfo/libguestfs-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org