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authorAlexey Dobriyan <adobriyan@gmail.com>2019-03-06 02:50:42 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 08:07:22 +0300
commit332e0e804d64894cf32db363e7f14c64a6ce8061 (patch)
tree396234b31d22420606065efe3c5d7877ca9bcc44 /tools
parente483b0208784146864a2c195e316230647e9d297 (diff)
downloadlinux-332e0e804d64894cf32db363e7f14c64a6ce8061.tar.xz
proc: more robust bulk read test
/proc may not be mounted and test will exit successfully. Ensure proc is mounted at /proc. Link: http://lkml.kernel.org/r/20190209105613.GA10384@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/proc/read.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/proc/read.c b/tools/testing/selftests/proc/read.c
index b2bd8da58efe..b3ef9e14d6cc 100644
--- a/tools/testing/selftests/proc/read.c
+++ b/tools/testing/selftests/proc/read.c
@@ -26,8 +26,10 @@
#include <dirent.h>
#include <stdbool.h>
#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
+#include <sys/vfs.h>
#include <fcntl.h>
#include <unistd.h>
@@ -123,10 +125,22 @@ static void f(DIR *d, unsigned int level)
int main(void)
{
DIR *d;
+ struct statfs sfs;
d = opendir("/proc");
if (!d)
return 4;
+
+ /* Ensure /proc is proc. */
+ if (fstatfs(dirfd(d), &sfs) == -1) {
+ return 1;
+ }
+ if (sfs.f_type != 0x9fa0) {
+ fprintf(stderr, "error: unexpected f_type %lx\n", (long)sfs.f_type);
+ return 2;
+ }
+
f(d, 0);
+
return 0;
}