diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-12-14 20:59:38 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-12-15 11:22:30 +0000 |
| commit | 9dd7e9b6f4c96cc1fd1c930452c7f54c12892b9d (patch) | |
| tree | fc034a9d167c059fadafe16869e929eb4e6f701c | |
| parent | d35ce13878e53c08fad2d43fec411eb041d24bb5 (diff) | |
lib/sysfs: Handle EINTR from vfprintf()
Some write operations into sysfs may be slow and potentially interrupted
by a signal. So handle EINTR by repeating the vfprintf(). A partial is
reported back to the caller, as is any other error.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com
| -rw-r--r-- | lib/igt_sysfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/igt_sysfs.c b/lib/igt_sysfs.c index e7c67dae..030d1c6a 100644 --- a/lib/igt_sysfs.c +++ b/lib/igt_sysfs.c @@ -399,7 +399,9 @@ int igt_sysfs_vprintf(int dir, const char *attr, const char *fmt, va_list ap) file = fdopen(fd, "w"); if (file) { - ret = vfprintf(file, fmt, ap); + do { + ret = vfprintf(file, fmt, ap); + } while (ret == -1 && errno == EINTR); fclose(file); } close(fd); |