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sd-id128: make sd_id128_get_boot() and friend return -ENOSYS when /proc/ is not mounted

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This commit is contained in:
Yu Watanabe
2022-12-12 22:03:52 +09:00
parent 9be90c401e
commit e2720340e9
1 changed files with 3 additions and 0 deletions
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3
src/libsystemd/sd-id128/sd-id128.c
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@@ -15,6 +15,7 @@
#include "macro.h"
#include "missing_syscall.h"
#include "random-util.h"
#include "stat-util.h"
#include "user-util.h"
_public_ char *sd_id128_to_string(sd_id128_t id, char s[_SD_ARRAY_STATIC SD_ID128_STRING_MAX]) {
@@ -146,6 +147,8 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) {
if (sd_id128_is_null(saved_boot_id)) {
r = id128_read("/proc/sys/kernel/random/boot_id", ID128_FORMAT_UUID, &saved_boot_id);
if (r == -ENOENT && proc_mounted() == 0)
return -ENOSYS;
if (r < 0)
return r;