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; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html