mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2026-02-05 04:06:34 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Merge 9184bb0db0 into 0c7086777a

Browse source
This commit is contained in:
Mingjie Shen 2025-03-09 15:00:52 +01:00 • committed by GitHub
commit 94e8aa2efa
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 16 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

30
src/ucm/ucm_subs.c
View file

@ -518,30 +518,32 @@ static char *rval_sysfs(snd_use_case_mgr_t *uc_mgr ATTRIBUTE_UNUSED, const char
if (id[0] == '/')
id++;
snprintf(path, sizeof(path), "%s/%s", e, id);
if (lstat64(path, &sb) != 0)
return NULL;
if (S_ISLNK(sb.st_mode)) {
len = readlink(path, link, sizeof(link) - 1);
if (len <= 0) {
uc_error("sysfs: cannot read link '%s' (%d)", path, errno);
return NULL;
}
len = readlink(path, link, sizeof(link) - 1);
if (len > 0) {
link[len] = '\0';
e = strrchr(link, '/');
if (e)
return strdup(e + 1);
return NULL;
}
if (S_ISDIR(sb.st_mode))
return NULL;
if ((sb.st_mode & S_IRUSR) == 0)
return NULL;
fd = open(path, O_RDONLY);
fd = open(path, O_RDONLY | O_NOFOLLOW);
if (fd < 0) {
uc_error("sysfs open failed for '%s' (%d)", path, errno);
return NULL;
}
if (fstat64(fd, &sb) != 0) {
close(fd);
return NULL;
}
if (S_ISDIR(sb.st_mode)) {
close(fd);
return NULL;
}
if ((sb.st_mode & S_IRUSR) == 0) {
close(fd);
return NULL;
}
len = read(fd, path, sizeof(path)-1);
close(fd);
if (len < 0) {