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Update comments for selecting maps

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Use dm_snprintf and check result whether we create correct /proc path name
This commit is contained in:
Zdenek Kabelac 2010-03-09 10:25:50 +00:00
parent f518aadf43
commit d0c3da55a0
1 changed files with 8 additions and 7 deletions
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15
lib/mm/memlock.c
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@ -78,7 +78,7 @@ typedef enum { LVM_MLOCK, LVM_MUNLOCK } lvmlock_t;
static unsigned _use_mlockall;
static FILE *_mapsh;
static char _procselfmaps[PATH_MAX] = "";
static const char _selfmaps[] = "/self/maps";
#define SELF_MAPS "/self/maps"
struct maps_stats {
size_t r_size;
@ -140,7 +140,7 @@ static int _maps_line(struct cmd_context *cmd, lvmlock_t lock,
return 0;
}
/* skip ---p, select with r,w,x */
/* Select readable maps */
if (fr != 'r')
return 1;
@ -244,13 +244,14 @@ static void _lock_mem(struct cmd_context *cmd)
_use_mlockall = find_config_tree_bool(cmd, "activation/use_mlockall", DEFAULT_USE_MLOCKALL);
if (!_use_mlockall) {
/* Initialise static variables first time */
/* Reset statistic counters */
memset(&_mstats, 0, sizeof(_mstats));
if (!*_procselfmaps) {
_procselfmaps[PATH_MAX - 1] = '\0';
strncpy(_procselfmaps, cmd->proc_dir, PATH_MAX - 1);
strncat(_procselfmaps, _selfmaps, PATH_MAX - 1);
if (!*_procselfmaps &&
dm_snprintf(_procselfmaps, sizeof(_procselfmaps),
"%s" SELF_MAPS, cmd->proc_dir) < 0) {
log_error("proc_dir too long");
return;
}
if (!(_mapsh = fopen(_procselfmaps, "r"))) {