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main: use sysctl_writef() where appropriate

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This commit is contained in:
Lennart Poettering 2019-07-12 11:04:12 +02:00
parent e7ac08e4e0
commit 56e8419aa8
1 changed files with 2 additions and 18 deletions
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20
src/core/main.c
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@ -1072,27 +1072,17 @@ static void bump_file_max_and_nr_open(void) {
* hard) the only ones that really matter. */
#if BUMP_PROC_SYS_FS_FILE_MAX || BUMP_PROC_SYS_FS_NR_OPEN
_cleanup_free_ char *t = NULL;
int r;
#endif
#if BUMP_PROC_SYS_FS_FILE_MAX
/* The maximum the kernel allows for this since 5.2 is LONG_MAX, use that. (Previously thing where
* different but the operation would fail silently.) */
if (asprintf(&t, "%li\n", LONG_MAX) < 0) {
log_oom();
return;
}
r = sysctl_write("fs/file-max", t);
r = sysctl_writef("fs/file-max", "%li\n", LONG_MAX);
if (r < 0)
log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.file-max, ignoring: %m");
#endif
#if BUMP_PROC_SYS_FS_FILE_MAX && BUMP_PROC_SYS_FS_NR_OPEN
t = mfree(t);
#endif
#if BUMP_PROC_SYS_FS_NR_OPEN
int v = INT_MAX;
@ -1122,13 +1112,7 @@ static void bump_file_max_and_nr_open(void) {
break;
}
if (asprintf(&t, "%i\n", v) < 0) {
log_oom();
return;
}
r = sysctl_write("fs/nr_open", t);
t = mfree(t);
r = sysctl_writef("fs/nr_open", "%i\n", v);
if (r == -EINVAL) {
log_debug("Couldn't write fs.nr_open as %i, halving it.", v);
v /= 2;