xfstests: add fiemap operation to fsstress

Related bug: http://patchwork.ozlabs.org/patch/118863

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index c258ee9dcda89f3189d1ac4c75d2ef8ea43ff4e9..09c9529aed3908a579860ca97e506f6aa558e950 100644 (file)
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -24,6 +24,9 @@
 #ifdef HAVE_ATTR_ATTRIBUTES_H
 #include <attr/attributes.h>
 #endif
+#ifdef HAVE_LINUX_FIEMAP_H
+#include <linux/fiemap.h>
+#endif
 #ifdef FALLOCATE
 #include <linux/falloc.h>
 #ifndef FALLOC_FL_PUNCH_HOLE
@@ -65,6 +68,7 @@ typedef enum {
        OP_DWRITE,
        OP_FALLOCATE,
        OP_FDATASYNC,
+       OP_FIEMAP,
        OP_FREESP,
        OP_FSYNC,
        OP_GETATTR,
@@ -149,6 +153,7 @@ void        dread_f(int, long);
 void   dwrite_f(int, long);
 void   fallocate_f(int, long);
 void   fdatasync_f(int, long);
+void   fiemap_f(int, long);
 void   freesp_f(int, long);
 void   fsync_f(int, long);
 void   getattr_f(int, long);
@@ -184,6 +189,7 @@ opdesc_t    ops[] = {
        { OP_DWRITE, "dwrite", dwrite_f, 4, 1 },
        { OP_FALLOCATE, "fallocate", fallocate_f, 1, 1 },
        { OP_FDATASYNC, "fdatasync", fdatasync_f, 1, 1 },
+       { OP_FIEMAP, "fiemap", fiemap_f, 1, 1 },
        { OP_FREESP, "freesp", freesp_f, 1, 1 },
        { OP_FSYNC, "fsync", fsync_f, 1, 1 },
        { OP_GETATTR, "getattr", getattr_f, 1, 0 },
@@ -2130,6 +2136,76 @@ fdatasync_f(int opno, long r)
        free_pathname(&f);
        close(fd);
 }
+void
+fiemap_f(int opno, long r)
+{
+#ifdef HAVE_LINUX_FIEMAP_H
+       int             e;
+       pathname_t      f;
+       int             fd;
+       __int64_t       lr;
+       off64_t         off;
+       struct stat64   stb;
+       int             v;
+       char            st[1024];
+       int blocks_to_map;
+       struct fiemap *fiemap;
+
+       init_pathname(&f);
+       if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+               if (v)
+                       printf("%d/%d: fiemap - 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: fiemap - open %s failed %d\n",
+                               procid, opno, f.path, e);
+               free_pathname(&f);
+               return;
+       }
+       if (fstat64(fd, &stb) < 0) {
+               if (v)
+                       printf("%d/%d: fiemap - fstat64 %s failed %d\n",
+                               procid, opno, f.path, errno);
+               free_pathname(&f);
+               close(fd);
+               return;
+       }
+       inode_info(st, sizeof(st), &stb, v);
+       blocks_to_map = random() & 0xffff;
+       fiemap = (struct fiemap *)malloc(sizeof(struct fiemap) +
+                       (blocks_to_map * sizeof(struct fiemap_extent)));
+       if (!fiemap) {
+               if (v)
+                       printf("%d/%d: malloc failed \n", procid, opno);
+               free_pathname(&f);
+               close(fd);
+               return;
+       }
+       lr = ((__int64_t)random() << 32) + random();
+       off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
+       off %= maxfsize;
+       fiemap->fm_flags = random() & (FIEMAP_FLAGS_COMPAT | 0x10000);
+       fiemap->fm_extent_count = blocks_to_map;
+       fiemap->fm_mapped_extents = random() & 0xffff;
+       fiemap->fm_start = off;
+       fiemap->fm_length = ((__int64_t)random() << 32) + random();
+
+       e = ioctl(fd, FS_IOC_FIEMAP, (unsigned long)fiemap);
+       if (v)
+               printf("%d/%d: ioctl(FIEMAP) %s%s %lld %lld %x %d\n",
+                      procid, opno, f.path, st, (long long)fiemap->fm_start,
+                      (long long) fiemap->fm_length, fiemap->fm_flags, e);
+       free(fiemap);
+       free_pathname(&f);
+       close(fd);
+#endif
+}
 
 void
 freesp_f(int opno, long r)