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| author |   Alexey Dobriyan <adobriyan@gmail.com> | 2019-03-05 15:50:42 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:22 -0800 |
| commit | 332e0e804d64894cf32db363e7f14c64a6ce8061 (patch) | |
| tree | 396234b31d22420606065efe3c5d7877ca9bcc44 /tools | |
| parent | proc: test /proc/*/maps, smaps, smaps_rollup, statm (diff) | |
| download | linux-dev-332e0e804d64894cf32db363e7f14c64a6ce8061.tar.xz linux-dev-332e0e804d64894cf32db363e7f14c64a6ce8061.zip | |
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.c | 14 |
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; } |