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...tatic int read_cache_qemu_stat (guestfs_h *g, struct qemu_data *data, const char *filename); +static int write_cache_qemu_stat (guestfs_h *g, const struct qemu_data *data, const char *filename); static void parse_qemu_version (guestfs_h *g, const char *, struct version *qemu_version); static void read_all (guestfs_h *g, void *retv, const char *buf, size_t len); +static int generic_read_cache (guestfs_h *g, const char *filename, char **strp); +static int generic_write_cache (guestfs_h *g, const char *filename, const char *str); + +/* This structure abstracts the data we are reading from qemu and how...

I am just getting into web servers/web applications and rails as well so bear with me. I am trying to write a web app that, based on a users input from the browser, will perform some task, and update the browser (ala ajax style) as needed and/or provide a way for the user to control the background task. Now, I have more experience with java servlets, which makes this easy enough for a beginner.

...qemu -version. */ char *qemu_devices; /* Output of qemu -device ? */ /* qemu version (0, 0 if unable to parse). */ @@ -931,22 +930,18 @@ print_qemu_command_line (guestfs_h *g, char **argv) static void parse_qemu_version (guestfs_h *g, struct backend_direct_data *data); static void read_all (guestfs_h *g, void *retv, const char *buf, size_t len); -/* Test qemu binary (or wrapper) runs, and do 'qemu -help' and - * 'qemu -version' so we know what options this qemu supports and - * the version. +/* Test qemu binary (or wrapper) runs, and do 'qemu -help' so we k...

The patch I posted last week to disable mandatory locking for readonly drives (https://www.redhat.com/archives/libguestfs/2017-September/msg00013.html) was wrong in a couple of respects. Firstly it didn't work, which I didn't detect because my tests were testing the wrong thing. Oops. Secondly it used a simple version number check to detect qemu binaries implementing mandatory locking.

v2 -> v3: - I addressed everything that Pino mentioned last time. - It's tricky to get a stable run when multiple copies of qemu are involved, because the same cache files get overwritten by parallel libguestfs. So I changed the names of the cache files to include the qemu binary key (size, mtime), which removes this conflict. This is in new patch 4/6. Rich.

Patches 1-4 are almost the same as they are when previously posted here: https://www.redhat.com/archives/libguestfs/2017-September/msg00039.html Patch 5 actually uses the mandatory locking test to turn off locking in the narrow case where a drive is opened readonly, and then only for the drive being inspected. Passes ordinary tests (‘check-direct’ and ‘check-valgrind-direct’). Rich.

...guestfs___cmd_add_arg (cmd1, g->hv); - guestfs___cmd_add_arg (cmd1, "-nographic"); + guestfs___cmd_add_arg (cmd1, "-display"); + guestfs___cmd_add_arg (cmd1, "none"); guestfs___cmd_add_arg (cmd1, "-help"); guestfs___cmd_set_stdout_callback (cmd1, read_all, &data->qemu_help, CMD_STDOUT_FLAG_WHOLE_BUFFER); @@ -927,7 +929,8 @@ test_qemu (guestfs_h *g, struct backend_direct_data *data) goto error; guestfs___cmd_add_arg (cmd2, g->hv); - guestfs___cmd_add_arg (cmd2, "-nographic"); + gu...

v1 -> v2: - Rebase on top of Pino's version work. Two patches went upstream, these are the two remaining patches. Note the generation number is still inside the qemu.stat file. We could put it in the filename, I have no particular preference. Rich.

...UDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) >> (gdb) bt >> #0 0x00007f1906e6684d in read () at >> ../sysdeps/unix/syscall-template.S:81 >> #1 0x00007f18f8c415be in read (__nbytes=16, __buf=0x7f18d4000c50, >> __fd=26) at /usr/include/bits/unistd.h:44 >> #2 read_all (fd=26, data=data@entry =0x7f18d4000c50, len=len@entry =16, >> nonblocking=nonblocking@entry =0) at xs.c:374 >> #3 0x00007f18f8c41675 in read_message (h=h@entry =0x7f18e8001070, >> nonblocking=nonblocking@entry =0) at xs.c:1139 >> #4 0x00007f18f8c41e90 in read_thread (arg...

...ead () at ../sysdeps/unix/syscall-template.S:81 81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) (gdb) bt #0 0x00007f1906e6684d in read () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f18f8c415be in read (__nbytes=16, __buf=0x7f18d4000c50, __fd=26) at /usr/include/bits/unistd.h:44 #2 read_all (fd=26, data=data@entry =0x7f18d4000c50, len=len@entry =16, nonblocking=nonblocking@entry =0) at xs.c:374 #3 0x00007f18f8c41675 in read_message (h=h@entry =0x7f18e8001070, nonblocking=nonblocking@entry =0) at xs.c:1139 #4 0x00007f18f8c41e90 in read_thread (arg=0x7f18e8001070) at xs.c:1211 #5 0x000...

Patches 1 & 2 were posted previously here: https://www.redhat.com/archives/libguestfs/2016-May/msg00134.html Patch 3 is a hack so I can test this using my own version of qemu (the `-L ?' stuff is not upstream). Patch 4 is where the real action takes place: Replace the caching of qemu features in blob-like files with a sqlite database. Probably the best way to approach this patch is to

I have dovecot (with squirrel mail etc.) running without any problems but cannot understand how to get e-mail from a pop server into dovecot. I have fetchmail configured to pick up the mail from the pop3 server but don't understand how to get it from there into my dovecot mbox structure. New to mail servers! Thanks, Michael.

Doing qemu feature detection in the direct backend takes ~100ms because we need to run `qemu -help' and `qemu -devices ?', and each of those interacts with glibc's very slow link loader. Fixing the link loader is really hard. Instead memoize the output of those two commands. This patch series first separates all the code dealing with qemu into a separate module (src/qemu.c) and

NOTE: Not for upstream, yet. This depends on 3 non-upstream patches. - The qemu rework in libguestfs, which in turn depends on what Pino is up to. - Support for '-L ?' in qemu: https://lists.gnu.org/archive/html/qemu-devel/2016-05/threads.html#02596 - Support for bios-fast.bin in qemu: https://lists.gnu.org/archive/html/qemu-devel/2016-05/threads.html#02408 This commit

.../syscall-template.S:81 > 81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) > (gdb) bt > #0 0x00007f1906e6684d in read () at ../sysdeps/unix/syscall-template.S:81 > #1 0x00007f18f8c415be in read (__nbytes=16, __buf=0x7f18d4000c50, __fd=26) at /usr/include/bits/unistd.h:44 > #2 read_all (fd=26, data=data@entry =0x7f18d4000c50, len=len@entry =16, nonblocking=nonblocking@entry =0) at xs.c:374 > #3 0x00007f18f8c41675 in read_message (h=h@entry =0x7f18e8001070, nonblocking=nonblocking@entry =0) at xs.c:1139 > #4 0x00007f18f8c41e90 in read_thread (arg=0x7f18e8001070) at xs.c:121...

...CALL_NAME, SYSCALL_NARGS) >>> (gdb) bt >>> #0 0x00007f1906e6684d in read () at >>> ../sysdeps/unix/syscall-template.S:81 >>> #1 0x00007f18f8c415be in read (__nbytes=16, __buf=0x7f18d4000c50, >>> __fd=26) at /usr/include/bits/unistd.h:44 >>> #2 read_all (fd=26, data=data@entry =0x7f18d4000c50, len=len@entry =16, >>> nonblocking=nonblocking@entry =0) at xs.c:374 >>> #3 0x00007f18f8c41675 in read_message (h=h@entry =0x7f18e8001070, >>> nonblocking=nonblocking@entry =0) at xs.c:1139 >>> #4 0x00007f18f8c41e90 in...

This commit uses -bios bios-fast.bin if available, which basically stops SeaBIOS from trying to do PCI probing during boot, which is a waste of time when using the -kernel option. v1 -> v2: - Rebase on top of Pino's work. This still has 3 dependencies: - The qemu memoization work (v2). - Support for '-L ?' in qemu:

Inspired by libvirt's virCommand* internal mini-library, this adds some internal APIs for running commands. The first patch contains the new APIs. The subsequent patches change various parts of the library over to use it. Rich.

...ta, const char *filename); static int write_cache_qemu_stat (guestfs_h *g, const struct qemu_data *data, const char *filename); static void parse_qemu_version (guestfs_h *g, const char *, struct version *qemu_version); +static void parse_json (guestfs_h *g, const char *, yajl_val *); static void read_all (guestfs_h *g, void *retv, const char *buf, size_t len); static int generic_read_cache (guestfs_h *g, const char *filename, char **strp); static int generic_write_cache (guestfs_h *g, const char *filename, const char *str); +static int generic_qmp_test (guestfs_h *g, struct qemu_data *data, cons...

...elivered_to : False ??? fingerprint : False ??? logfile : logfile(filename="~/.getmail/log") ??? max_bytes_per_session : 0 ??? max_message_size : 0 ??? max_messages_per_session : 0 ??? message_log : ~/.getmail/log ??? message_log_syslog : False ??? message_log_verbose : False ??? read_all : True ??? received : False ??? verbose : 1 dovecot.log: Oct 26 07:41:20 lda(peter.nabbefeld at gmx.de)<24607><UvPzGACp0lsfYAAA7IIYzw>: Panic: file istream-crlf.c: line 24 (i_stream_crlf_read_common): assertion failed: (ret != -2) Oct 26 07:41:20 lda(peter.nabbefeld at gmx.de)...