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lib/lock.c: applied MC indentation policy.

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Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin 2010-10-22 15:17:27 +04:00
parent 533567c1a7
commit 8f54b9b0b5
1 changed files with 71 additions and 60 deletions
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131
lib/lock.c
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@ -19,7 +19,7 @@
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
*/
/** \file
* \brief Source: file locking
@ -40,7 +40,7 @@
#include <config.h>
#include <signal.h> /* kill() */
#include <signal.h> /* kill() */
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
@ -57,12 +57,13 @@
#include "lib/util.h" /* tilde_expand() */
#include "lib/lock.h"
#include "src/wtools.h" /* query_dialog() */
#include "src/wtools.h" /* query_dialog() */
#define BUF_SIZE 255
#define PID_BUF_SIZE 10
struct lock_s {
struct lock_s
{
char *who;
pid_t pid;
};
@ -79,15 +80,20 @@ lock_build_name (void)
struct passwd *pw;
pw = getpwuid (getuid ());
if (pw) user = pw->pw_name;
if (!user) user = getenv ("USER");
if (!user) user = getenv ("USERNAME");
if (!user) user = getenv ("LOGNAME");
if (!user) user = "";
if (pw)
user = pw->pw_name;
if (!user)
user = getenv ("USER");
if (!user)
user = getenv ("USERNAME");
if (!user)
user = getenv ("LOGNAME");
if (!user)
user = "";
/** \todo Use FQDN, no clean interface, so requires lot of code */
if (gethostname (host, BUF_SIZE - 1) == -1)
*host = '\0';
*host = '\0';
return g_strdup_printf ("%s@%s.%d", user, host, (int) getpid ());
}
@ -99,7 +105,7 @@ lock_build_symlink_name (const char *fname)
char absolute_fname[PATH_MAX];
if (mc_realpath (fname, absolute_fname) == NULL)
return NULL;
return NULL;
fname = x_basename (absolute_fname);
fname_copy = g_strdup (fname);
@ -122,19 +128,19 @@ lock_extract_info (const char *str)
len = strlen (str);
for (p = str + len - 1; p >= str; p--)
if (*p == '.')
break;
if (*p == '.')
break;
/* Everything before last '.' is user@host */
i = 0;
for (s = str; s < p && i < BUF_SIZE; s++)
who[i++] = *s;
who[i++] = *s;
who[i] = '\0';
/* Treat text between '.' and ':' or '\0' as pid */
i = 0;
for (p = p + 1; (p < str + len) && (*p != ':') && (i < PID_BUF_SIZE); p++)
pid[i++] = *p;
pid[i++] = *p;
pid[i] = '\0';
lock.pid = (pid_t) atol (pid);
@ -151,7 +157,7 @@ lock_get_info (const char *lockfname)
cnt = readlink (lockfname, buf, BUF_SIZE - 1);
if (cnt == -1 || *buf == '\0')
return NULL;
return NULL;
buf[cnt] = '\0';
return buf;
}
@ -170,7 +176,7 @@ lock_file (const char *fname)
/* Just to be sure (and don't lock new file) */
if (fname == NULL || *fname == '\0')
return 0;
return 0;
fname = tilde_expand (fname);
@ -178,46 +184,48 @@ lock_file (const char *fname)
if (!vfs_file_is_local (fname))
{
g_free (fname);
return 0;
return 0;
}
/* Check if already locked */
lockfname = lock_build_symlink_name (fname);
g_free (fname);
if (lockfname == NULL)
return 0;
return 0;
if (lstat (lockfname, &statbuf) == 0) {
lock = lock_get_info (lockfname);
if (lock == NULL) {
g_free (lockfname);
return 0;
}
lockinfo = lock_extract_info (lock);
if (lstat (lockfname, &statbuf) == 0)
{
lock = lock_get_info (lockfname);
if (lock == NULL)
{
g_free (lockfname);
return 0;
}
lockinfo = lock_extract_info (lock);
/* Check if locking process alive, ask user if required */
if (lockinfo->pid == 0
|| !(kill (lockinfo->pid, 0) == -1 && errno == ESRCH)) {
msg =
g_strdup_printf (_
("File \"%s\" is already being edited.\n"
"User: %s\nProcess ID: %d"), x_basename (lockfname) + 2,
lockinfo->who, (int) lockinfo->pid);
/* TODO: Implement "Abort" - needs to rewind undo stack */
switch (query_dialog
(_("File locked"), msg, D_NORMAL, 2, _("&Grab lock"),
_("&Ignore lock"))) {
case 0:
break;
case 1:
case -1:
g_free (lockfname);
g_free (msg);
return 0;
}
g_free (msg);
}
unlink (lockfname);
/* Check if locking process alive, ask user if required */
if (lockinfo->pid == 0 || !(kill (lockinfo->pid, 0) == -1 && errno == ESRCH))
{
msg =
g_strdup_printf (_
("File \"%s\" is already being edited.\n"
"User: %s\nProcess ID: %d"), x_basename (lockfname) + 2,
lockinfo->who, (int) lockinfo->pid);
/* TODO: Implement "Abort" - needs to rewind undo stack */
switch (query_dialog
(_("File locked"), msg, D_NORMAL, 2, _("&Grab lock"), _("&Ignore lock")))
{
case 0:
break;
case 1:
case -1:
g_free (lockfname);
g_free (msg);
return 0;
}
g_free (msg);
}
unlink (lockfname);
}
/* Create lock symlink */
@ -239,28 +247,31 @@ unlock_file (const char *fname)
/* Just to be sure */
if (fname == NULL || *fname == '\0')
return 0;
return 0;
fname = tilde_expand (fname);
lockfname = lock_build_symlink_name (fname);
g_free (fname);
if (lockfname == NULL)
return 0;
return 0;
/* Check if lock exists */
if (lstat (lockfname, &statbuf) == -1) {
g_free (lockfname);
return 0;
if (lstat (lockfname, &statbuf) == -1)
{
g_free (lockfname);
return 0;
}
lock = lock_get_info (lockfname);
if (lock != NULL) {
/* Don't touch if lock is not ours */
if (lock_extract_info (lock)->pid != getpid ()) {
g_free (lockfname);
return 0;
}
if (lock != NULL)
{
/* Don't touch if lock is not ours */
if (lock_extract_info (lock)->pid != getpid ())
{
g_free (lockfname);
return 0;
}
}
/* Remove lock */