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authorBrian Norris <computersforpeace@gmail.com>2012-01-27 10:30:45 -0800
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-02-02 13:23:39 +0200
commitde3f8789d9e54b2e0e45197a693ad87ebf3bab60 (patch)
tree7a39b15d5e6d3dfdcfce5ac8a28bf847358c7d3f /lib/libmtd.c
parentfb3281d740b4d222746e5e366732d414038c951e (diff)
libmtd: add `mtd_dev_present()' library function
Will be used for `mtdinfo --all' Artem: add a temporary stub for pre-2.6.30 kernels. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'lib/libmtd.c')
-rw-r--r--lib/libmtd.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/lib/libmtd.c b/lib/libmtd.c
index c6e5b20..888d118 100644
--- a/lib/libmtd.c
+++ b/lib/libmtd.c
@@ -713,10 +713,22 @@ out_close:
return -1;
}
+int mtd_dev_present(libmtd_t desc, int mtd_num) {
+ struct stat st;
+ struct libmtd *lib = (struct libmtd *)desc;
+ char file[strlen(lib->mtd) + 10];
+
+ if (!lib->sysfs_supported)
+ /* TODO: add legacy_dev_present() function */
+ return 1;
+
+ sprintf(file, lib->mtd, mtd_num);
+ return !stat(file, &st);
+}
+
int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd)
{
int ret;
- struct stat st;
struct libmtd *lib = (struct libmtd *)desc;
memset(mtd, 0, sizeof(struct mtd_dev_info));
@@ -724,15 +736,9 @@ int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd)
if (!lib->sysfs_supported)
return legacy_get_dev_info1(mtd_num, mtd);
- else {
- char file[strlen(lib->mtd) + 10];
-
- sprintf(file, lib->mtd, mtd_num);
- if (stat(file, &st)) {
- if (errno == ENOENT)
- errno = ENODEV;
- return -1;
- }
+ else if (!mtd_dev_present(desc, mtd_num)) {
+ errno = ENODEV;
+ return -1;
}
if (dev_get_major(lib, mtd_num, &mtd->major, &mtd->minor))