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process-util: more gracefully handle oom adjust parsing/setting

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Who knows what kind of mount shenanigans people employ, let's gracefully
handle parse failures of proc files, like we alway do otherwsie.
This commit is contained in:
Lennart Poettering 2024-11-07 14:54:21 +01:00
parent 68c554f23a
commit 7bf0149e9b
1 changed files with 10 additions and 2 deletions
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12
src/basic/process-util.c
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@ -1815,6 +1815,9 @@ int namespace_fork(
int set_oom_score_adjust(int value) {
char t[DECIMAL_STR_MAX(int)];
if (!oom_score_adjust_is_valid(value))
return -EINVAL;
xsprintf(t, "%i", value);
return write_string_file("/proc/self/oom_score_adj", t,
@ -1831,11 +1834,16 @@ int get_oom_score_adjust(int *ret) {
delete_trailing_chars(t, WHITESPACE);
assert_se(safe_atoi(t, &a) >= 0);
assert_se(oom_score_adjust_is_valid(a));
r = safe_atoi(t, &a);
if (r < 0)
return r;
if (!oom_score_adjust_is_valid(a))
return -ENODATA;
if (ret)
*ret = a;
return 0;
}