On Sat, Oct 29, 2011 at 12:48:13AM -0000, Dmitry Monakhov wrote:
> Add tests for fallocate(2) syscall
> - fallocate: reserve the disk space
> - punch: de-allocates the disk space
> Since FALLOC_FL_PUNCH_HOLE is relatively new it's value defined
> explicitly if not yet defined. Later we may clear that define.
>
> Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
>
> ---
> ltp/fsstress.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 126 insertions(+), 1 deletions(-)
>
> diff --git a/ltp/fsstress.c b/ltp/fsstress.c
> index 133a247..547bf30 100644
> --- a/ltp/fsstress.c
> +++ b/ltp/fsstress.c
> @@ -24,7 +24,13 @@
> #ifdef HAVE_ATTR_ATTRIBUTES_H
> #include <attr/attributes.h>
> #endif
> -
> +#ifdef FALLOCATE
> +#include <linux/falloc.h>
> +#ifndef FALLOC_FL_PUNCH_HOLE
> +/* Copy-paste from linux/falloc.h */
> +#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */
> +#endif
> +#endif
> #ifndef HAVE_ATTR_LIST
> #define attr_list(path, buf, size, flags, cursor) (errno = -ENOSYS, -1)
> #endif
> @@ -48,6 +54,7 @@ typedef enum {
> OP_CREAT,
> OP_DREAD,
> OP_DWRITE,
> + OP_FALLOCATE,
> OP_FDATASYNC,
> OP_FREESP,
> OP_FSYNC,
> @@ -55,6 +62,7 @@ typedef enum {
> OP_LINK,
> OP_MKDIR,
> OP_MKNOD,
> + OP_PUNCH,
> OP_READ,
> OP_READLINK,
> OP_RENAME,
> @@ -128,6 +136,7 @@ void chown_f(int, long);
> void creat_f(int, long);
> void dread_f(int, long);
> void dwrite_f(int, long);
> +void fallocate_f(int, long);
> void fdatasync_f(int, long);
> void freesp_f(int, long);
> void fsync_f(int, long);
> @@ -135,6 +144,7 @@ void getdents_f(int, long);
> void link_f(int, long);
> void mkdir_f(int, long);
> void mknod_f(int, long);
> +void punch_f(int, long);
> void read_f(int, long);
> void readlink_f(int, long);
> void rename_f(int, long);
> @@ -159,6 +169,7 @@ opdesc_t ops[] = {
> { OP_CREAT, "creat", creat_f, 4, 1 },
> { OP_DREAD, "dread", dread_f, 4, 0 },
> { OP_DWRITE, "dwrite", dwrite_f, 4, 1 },
> + { OP_FALLOCATE, "fallocate", fallocate_f, 1, 1 },
> { OP_FDATASYNC, "fdatasync", fdatasync_f, 1, 1 },
> { OP_FREESP, "freesp", freesp_f, 1, 1 },
> { OP_FSYNC, "fsync", fsync_f, 1, 1 },
> @@ -166,6 +177,7 @@ opdesc_t ops[] = {
> { OP_LINK, "link", link_f, 1, 1 },
> { OP_MKDIR, "mkdir", mkdir_f, 2, 1 },
> { OP_MKNOD, "mknod", mknod_f, 2, 1 },
> + { OP_PUNCH, "punch", punch_f, 1, 1 },
> { OP_READ, "read", read_f, 1, 0 },
> { OP_READLINK, "readlink", readlink_f, 1, 0 },
> { OP_RENAME, "rename", rename_f, 2, 1 },
> @@ -1998,6 +2010,63 @@ dwrite_f(int opno, long r)
> }
>
> void
> +fallocate_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 = 0;
> +
> + init_pathname(&f);
> + if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
> + if (v)
> + printf("%d/%d: fallocate - 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: fallocate - open %s failed %d\n",
> + procid, opno, f.path, e);
> + free_pathname(&f);
> + return;
> + }
> + if (fstat64(fd, &stb) < 0) {
> + if (v)
> + printf("%d/%d: fallocate - 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: fallocate(%d) %s %st %lld %lld %d\n",
> + procid, opno, mode,
> + f.path, st, (long long)off, (long long)len, e);
> + free_pathname(&f);
> + close(fd);
> +#endif
> +}
> +
> +
> +void
> fdatasync_f(int opno, long r)
> {
> int e;
> @@ -2270,6 +2339,62 @@ mknod_f(int opno, long r)
> }
>
> void
> +punch_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_PUNCH_HOLE;
> +
> + init_pathname(&f);
> + if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
> + if (v)
> + printf("%d/%d: punch hole - 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: punch hole - open %s failed %d\n",
> + procid, opno, f.path, e);
> + free_pathname(&f);
> + return;
> + }
> + if (fstat64(fd, &stb) < 0) {
> + if (v)
> + printf("%d/%d: punch hole - 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: punch hole(%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;
Looks good to me.
Reviewed-By: Phil White <pwhite@xxxxxxx>
Tested-By: Phil White <pwhite@xxxxxxx>
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