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authorKhem Raj <raj.khem@gmail.com>2012-02-03 20:06:55 -0800
committerKhem Raj <raj.khem@gmail.com>2012-02-05 12:11:26 -0800
commitae0e6225db6dacb4d4de81245fba8671526dfe90 (patch)
tree335d1f4ba329d7de195a3f87daa8e71e9d3a3e84 /test/stat
parent812ae602fe96bb40d1743d410eb1eadb6aa722f5 (diff)
lstat/stat/fstat: Use 64bit version of syscall if available
This is needed for stat'ing loop devices > 255 since otherwise kernel returns EOVERFLOW becasue it needs st_rdev/st_dev to be larger than 16bits but in kernel it uses __old_kernel_stat for stat syscall which has st_rdev/st_dev as unsigned short Add a testcase Signed-off-by: Khem Raj <raj.khem@gmail.com>
Diffstat (limited to 'test/stat')
-rw-r--r--test/stat/stat-loop256.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/test/stat/stat-loop256.c b/test/stat/stat-loop256.c
new file mode 100644
index 000000000..14284c184
--- /dev/null
+++ b/test/stat/stat-loop256.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+int main()
+{
+ struct stat statbuf;
+ int ret = 0;
+ char* loop255 = "/dev/loop255";
+ char* loop256 = "/dev/loop256";
+ mode_t mode = 0660;
+ mknod(loop255, mode, 0x7ff);
+ mknod(loop256, mode, 0x100700);
+ ret = stat(loop255, &statbuf);
+ if(ret < 0) {
+ printf("stat: Cant stat %s\n",loop255);
+ unlink(loop255);
+ exit(1);
+ }
+ ret = stat(loop256, &statbuf);
+ if(ret < 0) {
+ printf("stat: Cant stat %s\n",loop256);
+ unlink(loop255);
+ unlink(loop256);
+ exit(1);
+ }
+
+ unlink(loop255);
+ unlink(loop256);
+ exit(0);
+}
+