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inotify-backend: read maximum watches from procfs.

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This commit is contained in:
Henrik Hautakoski 2011-03-15 08:38:48 +02:00
parent c92dc973df
commit 8eda7e7a42
1 changed files with 13 additions and 1 deletions
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14
src/inotify-backend.c
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@ -22,11 +22,15 @@
#define WATCH_MASK (IN_MOVE | IN_CREATE | IN_DELETE | IN_ONLYDIR) #define WATCH_MASK (IN_MOVE | IN_CREATE | IN_DELETE | IN_ONLYDIR)
#define PROCFS_QSIZE "/proc/sys/fs/inotify/max_queued_events" #define PROCFS_PATH "/proc/sys/fs/inotify/"
#define PROCFS_QSIZE PROCFS_PATH "max_queued_events"
#define PROCFS_MAX_WATCHES PROCFS_PATH "max_user_watches"
static int fd = -1; static int fd = -1;
static unsigned inotify_qsize = 256; static unsigned inotify_qsize = 256;
static unsigned inotify_max_watches = 8192;
void read_unsigned_int(const char *filename, unsigned *val) { void read_unsigned_int(const char *filename, unsigned *val) {
@ -56,6 +60,14 @@ int inotify_backend_init(void) {
return -errno; return -errno;
read_unsigned_int(PROCFS_QSIZE, &inotify_qsize); read_unsigned_int(PROCFS_QSIZE, &inotify_qsize);
read_unsigned_int(PROCFS_MAX_WATCHES, &inotify_max_watches);
if (inotify_max_watches < 16384)
logmsg(LOG_WARN,
"inotify: the maximum number of inotify"
" watches is quite low (%u)."
" the application may not be able to track all files",
inotify_max_watches);
return fd; return fd;
} }