diff options
| author | Karel Zak | 2011-05-18 11:57:17 +0200 |
|---|---|---|
| committer | Karel Zak | 2011-05-18 11:57:17 +0200 |
| commit | 90e9fcda3bb3a215f027fc66c1182a18e0746972 (patch) | |
| tree | cd10e1fd1fe586cf3d08287c82f30cd7e4edce72 /include/sysfs.h | |
| parent | build-sys: disable lib/ at.c tests building (diff) | |
| download | kernel-qcow2-util-linux-90e9fcda3bb3a215f027fc66c1182a18e0746972.tar.gz kernel-qcow2-util-linux-90e9fcda3bb3a215f027fc66c1182a18e0746972.tar.xz kernel-qcow2-util-linux-90e9fcda3bb3a215f027fc66c1182a18e0746972.zip | |
lib: [sysfs.c] make sysfs_read_* function more robust
The functions does not modify result if the requested sysfs attribute
does not exist.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'include/sysfs.h')
| -rw-r--r-- | include/sysfs.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/sysfs.h b/include/sysfs.h index ed11a5e19..5190ac482 100644 --- a/include/sysfs.h +++ b/include/sysfs.h @@ -44,9 +44,11 @@ extern int sysfs_has_attribute(struct sysfs_cxt *cxt, const char *attr); extern int sysfs_scanf(struct sysfs_cxt *cxt, const char *attr, const char *fmt, ...) __attribute__ ((format (scanf, 3, 4))); -extern int64_t sysfs_read_s64(struct sysfs_cxt *cxt, const char *attr); -extern uint64_t sysfs_read_u64(struct sysfs_cxt *cxt, const char *attr); -extern int sysfs_read_int(struct sysfs_cxt *cxt, const char *attr); + +extern int sysfs_read_s64(struct sysfs_cxt *cxt, const char *attr, int64_t *res); +extern int sysfs_read_u64(struct sysfs_cxt *cxt, const char *attr, uint64_t *res); +extern int sysfs_read_int(struct sysfs_cxt *cxt, const char *attr, int *res); + extern char *sysfs_strdup(struct sysfs_cxt *cxt, const char *attr); extern int sysfs_count_dirents(struct sysfs_cxt *cxt, const char *attr); |