[PATCH i-g-t 05/12] lib/igt_drm_fdinfo: Detect invalid drm-client-id

[Lucas De Marchi <lucas.demarchi@intel.com>]

Use strtol() for string to long conversion which allows us to detect if
there was an invalid number. It also has the advantage that it already
ignores leading spaces.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 lib/igt_drm_fdinfo.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/lib/igt_drm_fdinfo.c b/lib/igt_drm_fdinfo.c
index de1962efa..8eb5e5eed 100644
--- a/lib/igt_drm_fdinfo.c
+++ b/lib/igt_drm_fdinfo.c
@@ -216,6 +216,7 @@ __igt_parse_drm_fdinfo(int dir, const char *fd, struct drm_client_fdinfo *info,
 		uint64_t val = 0;
 		size_t keylen;
 		const char *v;
+		char *end_ptr;
 		int idx;
 
 		_buf = NULL;
@@ -229,11 +230,9 @@ __igt_parse_drm_fdinfo(int dir, const char *fd, struct drm_client_fdinfo *info,
 			}
 		}  else if (strstartswith(l, "drm-client-id:", &keylen)) {
 			v = l + keylen;
-			v = ignore_space(v);
-			if (*v) {
-				info->id = atol(v);
+			info->id = strtol(v, &end_ptr, 10);
+			if (end_ptr != v)
 				good++;
-			}
 		} else if (strstartswith(l, "drm-pdev:", &keylen)) {
 			v = l + keylen;
 			v = ignore_space(v);
-- 
2.44.0