[PATCH 2/6] xfstests: Add fallocate zero range operation to fsstress

Lukas Czerner
2014-02-25T19:15:24Z

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
ltp/fsstress.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index c56f168..4c3368f 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -33,6 +33,9 @@
/* Copy-paste from linux/falloc.h */
#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */
#endif
+#ifndef FALLOC_FL_ZERO_RANGE
+#define FALLOC_FL_ZERO_RANGE 0x10 /* zeroes range */
+#endif
#endif
#ifndef HAVE_ATTR_LIST
#define attr_list(path, buf, size, flags, cursor) (errno = -ENOSYS, -1)
@@ -77,6 +80,7 @@ typedef enum {
OP_MKDIR,
OP_MKNOD,
OP_PUNCH,
+ OP_ZERO,
OP_READ,
OP_READLINK,
OP_RENAME,
@@ -162,6 +166,7 @@ void link_f(int, long);
void mkdir_f(int, long);
void mknod_f(int, long);
void punch_f(int, long);
+void zero_f(int, long);
void read_f(int, long);
void readlink_f(int, long);
void rename_f(int, long);
@@ -199,6 +204,7 @@ opdesc_t ops[] = {
{ OP_MKDIR, "mkdir", mkdir_f, 2, 1 },
{ OP_MKNOD, "mknod", mknod_f, 2, 1 },
{ OP_PUNCH, "punch", punch_f, 1, 1 },
+ { OP_ZERO, "zero", zero_f, 1, 1 },
{ OP_READ, "read", read_f, 1, 0 },
{ OP_READLINK, "readlink", readlink_f, 1, 0 },
{ OP_RENAME, "rename", rename_f, 2, 1 },
@@ -2561,6 +2567,62 @@ punch_f(int opno, long r)
}

void
+zero_f(int opno, long r)
+{
+#ifdef FALLOCATE
+ int e;
+ pathname_t f;
+ int fd;
+ __int64_t lr;
+ off64_t off;
+ off64_t len;
+ struct stat64 stb;
+ int v;
+ char st[1024];
+ int mode = FALLOC_FL_ZERO_RANGE;
+
+ init_pathname(&f);
+ if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+ if (v)
+ printf("%d/%d: zero range - no filename\n", procid, opno);
+ free_pathname(&f);
+ return;
+ }
+ fd = open_path(&f, O_RDWR);
+ e = fd < 0 ? errno : 0;
+ check_cwd();
+ if (fd < 0) {
+ if (v)
+ printf("%d/%d: zero range - open %s failed %d\n",
+ procid, opno, f.path, e);
+ free_pathname(&f);
+ return;
+ }
+ if (fstat64(fd, &stb) < 0) {
+ if (v)
+ printf("%d/%d: zero range - fstat64 %s failed %d\n",
+ procid, opno, f.path, errno);
+ free_pathname(&f);
+ close(fd);
+ return;
+ }
+ inode_info(st, sizeof(st), &stb, v);
+ lr = ((__int64_t)random() << 32) + random();
+ off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
+ off %= maxfsize;
+ len = (off64_t)(random() % (1024 * 1024));
+ mode |= FALLOC_FL_KEEP_SIZE & random();
+ e = fallocate(fd, mode, (loff_t)off, (loff_t)len) < 0 ? errno : 0;
+ if (v)
+ printf("%d/%d: zero range(%d) %s %s %lld %lld %d\n",
+ procid, opno, mode,
+ f.path, st, (long long)off, (long long)len, e);
+ free_pathname(&f);
+ close(fd);
+#endif
+}
+
+void
read_f(int opno, long r)
{
char *buf;
--
1.8.3.1