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alsactl: terminate readlink result string
readlink does not guarantee that its result string is nul-terminated. Instead, increase the buffer by one byte to make sure that we can add '\0' at the end. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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1 changed files with 2 additions and 2 deletions
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@ -108,11 +108,11 @@ static char *sysfs_attr_get_value(const char *devpath, const char *attr_name)
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if (S_ISLNK(statbuf.st_mode)) {
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/* links return the last element of the target path */
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char link_target[PATH_SIZE];
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char link_target[PATH_SIZE + 1];
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int len;
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const char *pos;
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len = readlink(path_full, link_target, sizeof(link_target));
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len = readlink(path_full, link_target, sizeof(link_target) - 1);
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if (len > 0) {
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link_target[len] = '\0';
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pos = strrchr(link_target, '/');
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