#include <setjmp.h>
#include <sys/uio.h>
#include <stddef.h>
+#include <stdbool.h>
#include "global.h"
-#ifdef HAVE_ATTR_ATTRIBUTES_H
-#include <attr/attributes.h>
+#ifdef HAVE_BTRFSUTIL_H
+#include <btrfsutil.h>
#endif
#ifdef HAVE_LINUX_FIEMAP_H
#include <linux/fiemap.h>
#endif
-#ifndef HAVE_ATTR_LIST
-#define attr_list(path, buf, size, flags, cursor) (errno = -ENOSYS, -1)
-#endif
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#ifdef AIO
#include <libaio.h>
+#define AIO_ENTRIES 1
io_context_t io_ctx;
#endif
+#ifdef URING
+#include <liburing.h>
+#define URING_ENTRIES 1
+struct io_uring ring;
+bool have_io_uring; /* to indicate runtime availability */
+#endif
#include <sys/syscall.h>
#include <sys/xattr.h>
#define IOV_MAX 1024
#endif
+#ifndef HAVE_RENAMEAT2
+#if !defined(SYS_renameat2) && defined(__x86_64__)
+#define SYS_renameat2 316
+#endif
+
+#if !defined(SYS_renameat2) && defined(__i386__)
+#define SYS_renameat2 353
+#endif
+
+static int renameat2(int dfd1, const char *path1,
+ int dfd2, const char *path2,
+ unsigned int flags)
+{
+#ifdef SYS_renameat2
+ return syscall(SYS_renameat2, dfd1, path1, dfd2, path2, flags);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+#endif
+
+#ifndef RENAME_NOREPLACE
+#define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */
+#endif
+#ifndef RENAME_EXCHANGE
+#define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */
+#endif
+#ifndef RENAME_WHITEOUT
+#define RENAME_WHITEOUT (1 << 2) /* Whiteout source */
+#endif
+
#define FILELEN_MAX (32*4096)
typedef enum {
OP_READV,
OP_REMOVEFATTR,
OP_RENAME,
+ OP_RNOREPLACE,
+ OP_REXCHANGE,
+ OP_RWHITEOUT,
OP_RESVSP,
OP_RMDIR,
OP_SETATTR,
OP_SETFATTR,
OP_SETXATTR,
+ OP_SNAPSHOT,
OP_SPLICE,
OP_STAT,
+ OP_SUBVOL_CREATE,
+ OP_SUBVOL_DELETE,
OP_SYMLINK,
OP_SYNC,
OP_TRUNCATE,
OP_UNLINK,
OP_UNRESVSP,
+ OP_URING_READ,
+ OP_URING_WRITE,
OP_WRITE,
OP_WRITEV,
OP_LAST
typedef struct fent {
int id;
+ int ft;
int parent;
int xattr_counter;
} fent_t;
int max;
};
-#define FT_DIR 0
-#define FT_DIRm (1 << FT_DIR)
-#define FT_REG 1
-#define FT_REGm (1 << FT_REG)
-#define FT_SYM 2
-#define FT_SYMm (1 << FT_SYM)
-#define FT_DEV 3
-#define FT_DEVm (1 << FT_DEV)
-#define FT_RTF 4
-#define FT_RTFm (1 << FT_RTF)
-#define FT_nft 5
-#define FT_ANYm ((1 << FT_nft) - 1)
+#define FT_DIR 0
+#define FT_DIRm (1 << FT_DIR)
+#define FT_REG 1
+#define FT_REGm (1 << FT_REG)
+#define FT_SYM 2
+#define FT_SYMm (1 << FT_SYM)
+#define FT_DEV 3
+#define FT_DEVm (1 << FT_DEV)
+#define FT_RTF 4
+#define FT_RTFm (1 << FT_RTF)
+#define FT_SUBVOL 5
+#define FT_SUBVOLm (1 << FT_SUBVOL)
+#define FT_nft 6
+#define FT_ANYm ((1 << FT_nft) - 1)
#define FT_REGFILE (FT_REGm | FT_RTFm)
-#define FT_NOTDIR (FT_ANYm & ~FT_DIRm)
+#define FT_NOTDIR (FT_ANYm & (~FT_DIRm & ~FT_SUBVOLm))
+#define FT_ANYDIR (FT_DIRm | FT_SUBVOLm)
#define FLIST_SLOT_INCR 16
#define NDCACHE 64
void readv_f(int, long);
void removefattr_f(int, long);
void rename_f(int, long);
+void rnoreplace_f(int, long);
+void rexchange_f(int, long);
+void rwhiteout_f(int, long);
void resvsp_f(int, long);
void rmdir_f(int, long);
void setattr_f(int, long);
void setfattr_f(int, long);
void setxattr_f(int, long);
+void snapshot_f(int, long);
void splice_f(int, long);
void stat_f(int, long);
+void subvol_create_f(int, long);
+void subvol_delete_f(int, long);
void symlink_f(int, long);
void sync_f(int, long);
void truncate_f(int, long);
void unlink_f(int, long);
void unresvsp_f(int, long);
+void uring_read_f(int, long);
+void uring_write_f(int, long);
void write_f(int, long);
void writev_f(int, long);
char *xattr_flag_to_string(int);
/* remove (delete) extended attribute */
{ OP_REMOVEFATTR, "removefattr", removefattr_f, 1, 1 },
{ OP_RENAME, "rename", rename_f, 2, 1 },
+ { OP_RNOREPLACE, "rnoreplace", rnoreplace_f, 2, 1 },
+ { OP_REXCHANGE, "rexchange", rexchange_f, 2, 1 },
+ { OP_RWHITEOUT, "rwhiteout", rwhiteout_f, 2, 1 },
{ OP_RESVSP, "resvsp", resvsp_f, 1, 1 },
{ OP_RMDIR, "rmdir", rmdir_f, 1, 1 },
/* set attribute flag (FS_IOC_SETFLAGS ioctl) */
{ OP_SETFATTR, "setfattr", setfattr_f, 2, 1 },
/* set project id (XFS_IOC_FSSETXATTR ioctl) */
{ OP_SETXATTR, "setxattr", setxattr_f, 1, 1 },
+ { OP_SNAPSHOT, "snapshot", snapshot_f, 1, 1 },
{ OP_SPLICE, "splice", splice_f, 1, 1 },
{ OP_STAT, "stat", stat_f, 1, 0 },
+ { OP_SUBVOL_CREATE, "subvol_create", subvol_create_f, 1, 1},
+ { OP_SUBVOL_DELETE, "subvol_delete", subvol_delete_f, 1, 1},
{ OP_SYMLINK, "symlink", symlink_f, 2, 1 },
{ OP_SYNC, "sync", sync_f, 1, 1 },
{ OP_TRUNCATE, "truncate", truncate_f, 2, 1 },
{ OP_UNLINK, "unlink", unlink_f, 1, 1 },
{ OP_UNRESVSP, "unresvsp", unresvsp_f, 1, 1 },
+ { OP_URING_READ, "uring_read", uring_read_f, 1, 0 },
+ { OP_URING_WRITE, "uring_write", uring_write_f, 1, 1 },
{ OP_WRITE, "write", write_f, 4, 1 },
{ OP_WRITEV, "writev", writev_f, 4, 1 },
}, *ops_end;
{ 0, 0, 'l', NULL },
{ 0, 0, 'c', NULL },
{ 0, 0, 'r', NULL },
+ { 0, 0, 's', NULL },
};
int dcache[NDCACHE];
void add_to_flist(int, int, int, int);
void append_pathname(pathname_t *, char *);
-int attr_list_path(pathname_t *, char *, const int, int, attrlist_cursor_t *);
-int attr_remove_path(pathname_t *, const char *, int);
-int attr_set_path(pathname_t *, const char *, const char *, const int, int);
+int attr_list_path(pathname_t *, char *, const int);
+int attr_remove_path(pathname_t *, const char *);
+int attr_set_path(pathname_t *, const char *, const char *, const int);
void check_cwd(void);
void cleanup_flist(void);
int creat_path(pathname_t *, mode_t);
void dcache_enter(int, int);
void dcache_init(void);
fent_t *dcache_lookup(int);
-void dcache_purge(int);
+void dcache_purge(int, int);
void del_from_flist(int, int);
int dirid_to_name(char *, int);
void doproc(void);
-int fent_to_name(pathname_t *, flist_t *, fent_t *);
-void fix_parent(int, int);
+int fent_to_name(pathname_t *, fent_t *);
+bool fents_ancestor_check(fent_t *, fent_t *);
+void fix_parent(int, int, bool);
void free_pathname(pathname_t *);
int generate_fname(fent_t *, int, pathname_t *, int *, int *);
int generate_xattr_name(int, char *, int);
DIR *opendir_path(pathname_t *);
void process_freq(char *);
int readlink_path(pathname_t *, char *, size_t);
-int rename_path(pathname_t *, pathname_t *);
+int rename_path(pathname_t *, pathname_t *, int);
int rmdir_path(pathname_t *);
void separate_pathname(pathname_t *, char *, pathname_t *);
void show_ops(int, char *);
void usage(void);
void write_freq(void);
void zero_freq(void);
+void non_btrfs_freq(const char *);
void sg_handler(int signum)
{
exit(1);
}
+ non_btrfs_freq(dirname);
(void)mkdir(dirname, 0777);
if (logname && logname[0] != '/') {
if (!getcwd(rpath, sizeof(rpath))){
}
procid = i;
#ifdef AIO
- if (io_setup(128, &io_ctx) != 0) {
- fprintf(stderr, "io_setup failed");
+ if (io_setup(AIO_ENTRIES, &io_ctx) != 0) {
+ fprintf(stderr, "io_setup failed\n");
exit(1);
}
+#endif
+#ifdef URING
+ have_io_uring = true;
+ /* If ENOSYS, just ignore uring, other errors are fatal. */
+ if (io_uring_queue_init(URING_ENTRIES, &ring, 0)) {
+ if (errno == ENOSYS) {
+ have_io_uring = false;
+ } else {
+ fprintf(stderr, "io_uring_queue_init failed\n");
+ exit(1);
+ }
+ }
#endif
for (i = 0; !loops || (i < loops); i++)
doproc();
return 1;
}
#endif
-
+#ifdef URING
+ if (have_io_uring)
+ io_uring_queue_exit(&ring);
+#endif
cleanup_flist();
free(freq_table);
return 0;
}
fep = &ftp->fents[ftp->nfiles++];
fep->id = id;
+ fep->ft = ft;
fep->parent = parent;
fep->xattr_counter = xattr_counter;
}
name->len += len;
}
+int
+attr_list_count(char *buffer, int buffersize)
+{
+ char *p = buffer;
+ char *end = buffer + buffersize;
+ int count = 0;
+
+ while (p < end && *p != 0) {
+ count++;
+ p += strlen(p) + 1;
+ }
+
+ return count;
+}
+
int
attr_list_path(pathname_t *name,
char *buffer,
- const int buffersize,
- int flags,
- attrlist_cursor_t *cursor)
+ const int buffersize)
{
char buf[NAME_MAX + 1];
pathname_t newname;
int rval;
- if (flags != ATTR_DONTFOLLOW) {
- errno = EINVAL;
- return -1;
- }
-
- rval = attr_list(name->path, buffer, buffersize, flags, cursor);
+ rval = llistxattr(name->path, buffer, buffersize);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
- rval = attr_list_path(&newname, buffer, buffersize, flags, cursor);
+ rval = attr_list_path(&newname, buffer, buffersize);
assert(chdir("..") == 0);
}
free_pathname(&newname);
}
int
-attr_remove_path(pathname_t *name, const char *attrname, int flags)
+attr_remove_path(pathname_t *name, const char *attrname)
{
char buf[NAME_MAX + 1];
pathname_t newname;
int rval;
- rval = attr_remove(name->path, attrname, flags);
+ rval = lremovexattr(name->path, attrname);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
- rval = attr_remove_path(&newname, attrname, flags);
+ rval = attr_remove_path(&newname, attrname);
assert(chdir("..") == 0);
}
free_pathname(&newname);
int
attr_set_path(pathname_t *name, const char *attrname, const char *attrvalue,
- const int valuelength, int flags)
+ const int valuelength)
{
char buf[NAME_MAX + 1];
pathname_t newname;
int rval;
- rval = attr_set(name->path, attrname, attrvalue, valuelength, flags);
+ rval = lsetxattr(name->path, attrname, attrvalue, valuelength, 0);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
- rval = attr_set_path(&newname, attrname, attrvalue, valuelength,
- flags);
+ rval = attr_set_path(&newname, attrname, attrvalue,
+ valuelength);
assert(chdir("..") == 0);
}
free_pathname(&newname);
int i;
i = dcache[dirid % NDCACHE];
- if (i >= 0 && (fep = &flist[FT_DIR].fents[i])->id == dirid)
+ if (i >= 0 && i < flist[FT_DIR].nfiles &&
+ (fep = &flist[FT_DIR].fents[i])->id == dirid)
+ return fep;
+ if (i >= 0 && i < flist[FT_SUBVOL].nfiles &&
+ (fep = &flist[FT_SUBVOL].fents[i])->id == dirid)
return fep;
return NULL;
}
void
-dcache_purge(int dirid)
+dcache_purge(int dirid, int ft)
{
int *dcp;
-
dcp = &dcache[dirid % NDCACHE];
- if (*dcp >= 0 && flist[FT_DIR].fents[*dcp].id == dirid)
+ if (*dcp >= 0 && *dcp < flist[ft].nfiles &&
+ flist[ft].fents[*dcp].id == dirid)
*dcp = -1;
}
flist_t *ftp;
ftp = &flist[ft];
- if (ft == FT_DIR)
- dcache_purge(ftp->fents[slot].id);
+ if (ft == FT_DIR || ft == FT_SUBVOL)
+ dcache_purge(ftp->fents[slot].id, ft);
if (slot != ftp->nfiles - 1) {
- if (ft == FT_DIR)
- dcache_purge(ftp->fents[ftp->nfiles - 1].id);
+ if (ft == FT_DIR || ft == FT_SUBVOL)
+ dcache_purge(ftp->fents[ftp->nfiles - 1].id, ft);
ftp->fents[slot] = ftp->fents[--ftp->nfiles];
} else
ftp->nfiles--;
}
+void
+delete_subvol_children(int parid)
+{
+ flist_t *flp;
+ int i;
+again:
+ for (i = 0, flp = flist; i < FT_nft; i++, flp++) {
+ int c;
+ for (c = 0; c < flp->nfiles; c++) {
+ if (flp->fents[c].parent == parid) {
+ int id = flp->fents[c].id;
+ del_from_flist(i, c);
+ if (i == FT_DIR || i == FT_SUBVOL)
+ delete_subvol_children(id);
+ goto again;
+ }
+ }
+ }
+}
+
fent_t *
dirid_to_fent(int dirid)
{
fent_t *efep;
fent_t *fep;
flist_t *flp;
+ int ft = FT_DIR;
if ((fep = dcache_lookup(dirid)))
return fep;
- flp = &flist[FT_DIR];
+again:
+ flp = &flist[ft];
for (fep = flp->fents, efep = &fep[flp->nfiles]; fep < efep; fep++) {
if (fep->id == dirid) {
dcache_enter(dirid, fep - flp->fents);
return fep;
}
}
+ if (ft == FT_DIR) {
+ ft = FT_SUBVOL;
+ goto again;
+ }
return NULL;
}
* Return 0 on error, 1 on success;
*/
int
-fent_to_name(pathname_t *name, flist_t *flp, fent_t *fep)
+fent_to_name(pathname_t *name, fent_t *fep)
{
+ flist_t *flp = &flist[fep->ft];
char buf[NAME_MAX + 1];
int i;
fent_t *pfep;
#endif
if (pfep == NULL)
return 0;
- e = fent_to_name(name, &flist[FT_DIR], pfep);
+ e = fent_to_name(name, pfep);
if (!e)
return 0;
append_pathname(name, "/");
return 1;
}
+bool
+fents_ancestor_check(fent_t *fep, fent_t *dfep)
+{
+ fent_t *tmpfep;
+
+ for (tmpfep = fep; tmpfep->parent != -1;
+ tmpfep = dirid_to_fent(tmpfep->parent)) {
+ if (tmpfep->parent == dfep->id)
+ return true;
+ }
+
+ return false;
+}
+
void
-fix_parent(int oldid, int newid)
+fix_parent(int oldid, int newid, bool swap)
{
fent_t *fep;
flist_t *flp;
for (j = 0, fep = flp->fents; j < flp->nfiles; j++, fep++) {
if (fep->parent == oldid)
fep->parent = newid;
+ else if (swap && fep->parent == newid)
+ fep->parent = oldid;
}
}
}
/* prepend fep parent dir-name to it */
if (fep) {
- e = fent_to_name(name, &flist[FT_DIR], fep);
+ e = fent_to_name(name, fep);
if (!e)
return 0;
append_pathname(name, "/");
/* fill-in what we were asked for */
if (name) {
- e = fent_to_name(name, flp, fep);
+ e = fent_to_name(name, fep);
#ifdef DEBUG
if (!e) {
fprintf(stderr, "%d: failed to get path for entry:"
}
int
-rename_path(pathname_t *name1, pathname_t *name2)
+rename_path(pathname_t *name1, pathname_t *name2, int mode)
{
char buf1[NAME_MAX + 1];
char buf2[NAME_MAX + 1];
pathname_t newname2;
int rval;
- rval = rename(name1->path, name2->path);
+ if (mode == 0)
+ rval = rename(name1->path, name2->path);
+ else
+ rval = renameat2(AT_FDCWD, name1->path,
+ AT_FDCWD, name2->path, mode);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name1, buf1, &newname1);
separate_pathname(name2, buf2, &newname2);
if (strcmp(buf1, buf2) == 0) {
if (chdir(buf1) == 0) {
- rval = rename_path(&newname1, &newname2);
+ rval = rename_path(&newname1, &newname2, mode);
assert(chdir("..") == 0);
}
} else {
append_pathname(&newname2, "../");
append_pathname(&newname2, name2->path);
if (chdir(buf1) == 0) {
- rval = rename_path(&newname1, &newname2);
+ rval = rename_path(&newname1, &newname2, mode);
assert(chdir("..") == 0);
}
} else {
append_pathname(&newname1, "../");
append_pathname(&newname1, name1->path);
if (chdir(buf2) == 0) {
- rval = rename_path(&newname1, &newname2);
+ rval = rename_path(&newname1, &newname2, mode);
assert(chdir("..") == 0);
}
}
p->freq = 0;
}
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+
+opty_t btrfs_ops[] = {
+ OP_SNAPSHOT,
+ OP_SUBVOL_CREATE,
+ OP_SUBVOL_DELETE,
+};
+
+void
+non_btrfs_freq(const char *path)
+{
+ opdesc_t *p;
+#ifdef HAVE_BTRFSUTIL_H
+ enum btrfs_util_error e;
+
+ e = btrfs_util_is_subvolume(path);
+ if (e != BTRFS_UTIL_ERROR_NOT_BTRFS)
+ return;
+#endif
+ for (p = ops; p < ops_end; p++) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(btrfs_ops); i++) {
+ if (p->op == btrfs_ops[i]) {
+ p->freq = 0;
+ break;
+ }
+ }
+ }
+}
+
void inode_info(char *str, size_t sz, struct stat64 *s, int verbose)
{
if (verbose)
do_aio_rw(int opno, long r, int flags)
{
int64_t align;
- char *buf;
+ char *buf = NULL;
struct dioattr diob;
int e;
pathname_t f;
- int fd;
+ int fd = -1;
size_t len;
int64_t lr;
off64_t off;
if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
if (v)
printf("%d/%d: do_aio_rw - no filename\n", procid, opno);
- free_pathname(&f);
- return;
+ goto aio_out;
}
fd = open_path(&f, flags|O_DIRECT);
e = fd < 0 ? errno : 0;
if (v)
printf("%d/%d: do_aio_rw - open %s failed %d\n",
procid, opno, f.path, e);
- free_pathname(&f);
- return;
+ goto aio_out;
}
if (fstat64(fd, &stb) < 0) {
if (v)
printf("%d/%d: do_aio_rw - fstat64 %s failed %d\n",
procid, opno, f.path, errno);
- free_pathname(&f);
- close(fd);
- return;
+ goto aio_out;
}
inode_info(st, sizeof(st), &stb, v);
if (!iswrite && stb.st_size == 0) {
if (v)
printf("%d/%d: do_aio_rw - %s%s zero size\n", procid, opno,
f.path, st);
- free_pathname(&f);
- close(fd);
- return;
+ goto aio_out;
}
if (xfsctl(f.path, fd, XFS_IOC_DIOINFO, &diob) < 0) {
if (v)
" fallback to stat()\n",
procid, opno, f.path, st, errno);
diob.d_mem = diob.d_miniosz = stb.st_blksize;
- diob.d_maxiosz = INT_MAX & ~(diob.d_miniosz - 1);
+ diob.d_maxiosz = rounddown_64(INT_MAX, diob.d_miniosz);
}
dio_env = getenv("XFS_DIO_MIN");
if (dio_env)
else if (len > diob.d_maxiosz)
len = diob.d_maxiosz;
buf = memalign(diob.d_mem, len);
+ if (!buf) {
+ if (v)
+ printf("%d/%d: do_aio_rw - memalign failed\n",
+ procid, opno);
+ goto aio_out;
+ }
if (iswrite) {
off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
if (v)
printf("%d/%d: %s - io_submit failed %d\n",
procid, opno, iswrite ? "awrite" : "aread", e);
- free_pathname(&f);
- close(fd);
- return;
+ goto aio_out;
}
if ((e = io_getevents(io_ctx, 1, 1, &event, NULL)) != 1) {
if (v)
printf("%d/%d: %s - io_getevents failed %d\n",
procid, opno, iswrite ? "awrite" : "aread", e);
- free_pathname(&f);
- close(fd);
- return;
+ goto aio_out;
}
e = event.res != len ? event.res2 : 0;
- free(buf);
if (v)
printf("%d/%d: %s %s%s [%lld,%d] %d\n",
procid, opno, iswrite ? "awrite" : "aread",
f.path, st, (long long)off, (int)len, e);
+ aio_out:
+ if (buf)
+ free(buf);
+ if (fd != -1)
+ close(fd);
+ free_pathname(&f);
+}
+#endif
+
+#ifdef URING
+void
+do_uring_rw(int opno, long r, int flags)
+{
+ char *buf = NULL;
+ int e;
+ pathname_t f;
+ int fd = -1;
+ size_t len;
+ int64_t lr;
+ off64_t off;
+ struct stat64 stb;
+ int v;
+ char st[1024];
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqe;
+ struct iovec iovec;
+ int iswrite = (flags & (O_WRONLY | O_RDWR)) ? 1 : 0;
+
+ if (!have_io_uring)
+ return;
+
+ init_pathname(&f);
+ if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+ if (v)
+ printf("%d/%d: do_uring_rw - no filename\n", procid, opno);
+ goto uring_out;
+ }
+ fd = open_path(&f, flags);
+ e = fd < 0 ? errno : 0;
+ check_cwd();
+ if (fd < 0) {
+ if (v)
+ printf("%d/%d: do_uring_rw - open %s failed %d\n",
+ procid, opno, f.path, e);
+ goto uring_out;
+ }
+ if (fstat64(fd, &stb) < 0) {
+ if (v)
+ printf("%d/%d: do_uring_rw - fstat64 %s failed %d\n",
+ procid, opno, f.path, errno);
+ goto uring_out;
+ }
+ inode_info(st, sizeof(st), &stb, v);
+ if (!iswrite && stb.st_size == 0) {
+ if (v)
+ printf("%d/%d: do_uring_rw - %s%s zero size\n", procid, opno,
+ f.path, st);
+ goto uring_out;
+ }
+ sqe = io_uring_get_sqe(&ring);
+ if (!sqe) {
+ if (v)
+ printf("%d/%d: do_uring_rw - io_uring_get_sqe failed\n",
+ procid, opno);
+ goto uring_out;
+ }
+ lr = ((int64_t)random() << 32) + random();
+ len = (random() % FILELEN_MAX) + 1;
+ buf = malloc(len);
+ if (!buf) {
+ if (v)
+ printf("%d/%d: do_uring_rw - malloc failed\n",
+ procid, opno);
+ goto uring_out;
+ }
+ iovec.iov_base = buf;
+ iovec.iov_len = len;
+ if (iswrite) {
+ off = (off64_t)(lr % MIN(stb.st_size + (1024 * 1024), MAXFSIZE));
+ off %= maxfsize;
+ memset(buf, nameseq & 0xff, len);
+ io_uring_prep_writev(sqe, fd, &iovec, 1, off);
+ } else {
+ off = (off64_t)(lr % stb.st_size);
+ io_uring_prep_readv(sqe, fd, &iovec, 1, off);
+ }
+
+ if ((e = io_uring_submit_and_wait(&ring, 1)) != 1) {
+ if (v)
+ printf("%d/%d: %s - io_uring_submit failed %d\n", procid, opno,
+ iswrite ? "uring_write" : "uring_read", e);
+ goto uring_out;
+ }
+ if ((e = io_uring_wait_cqe(&ring, &cqe)) < 0) {
+ if (v)
+ printf("%d/%d: %s - io_uring_wait_cqe failed %d\n", procid, opno,
+ iswrite ? "uring_write" : "uring_read", e);
+ goto uring_out;
+ }
+ if (v)
+ printf("%d/%d: %s %s%s [%lld, %d(res=%d)] %d\n",
+ procid, opno, iswrite ? "uring_write" : "uring_read",
+ f.path, st, (long long)off, (int)len, cqe->res, e);
+ io_uring_cqe_seen(&ring, cqe);
+
+ uring_out:
+ if (buf)
+ free(buf);
+ if (fd != -1)
+ close(fd);
free_pathname(&f);
- close(fd);
}
#endif
void
attr_remove_f(int opno, long r)
{
- attrlist_ent_t *aep;
- attrlist_t *alist;
- char *aname;
- char buf[4096];
- attrlist_cursor_t cursor;
+ char *bufname;
+ char *bufend;
+ char *aname = NULL;
+ char buf[XATTR_LIST_MAX];
int e;
int ent;
pathname_t f;
- int total;
+ int total = 0;
int v;
int which;
init_pathname(&f);
if (!get_fname(FT_ANYm, r, &f, NULL, NULL, &v))
append_pathname(&f, ".");
- total = 0;
- bzero(&cursor, sizeof(cursor));
- do {
- bzero(buf, sizeof(buf));
- e = attr_list_path(&f, buf, sizeof(buf), ATTR_DONTFOLLOW, &cursor);
- check_cwd();
- if (e)
- break;
- alist = (attrlist_t *)buf;
- total += alist->al_count;
- } while (alist->al_more);
+ e = attr_list_path(&f, buf, sizeof(buf));
+ check_cwd();
+ if (e > 0)
+ total = attr_list_count(buf, e);
if (total == 0) {
if (v)
printf("%d/%d: attr_remove - no attrs for %s\n",
free_pathname(&f);
return;
}
+
which = (int)(random() % total);
- bzero(&cursor, sizeof(cursor));
+ bufname = buf;
+ bufend = buf + e;
ent = 0;
- aname = NULL;
- do {
- bzero(buf, sizeof(buf));
- e = attr_list_path(&f, buf, sizeof(buf), ATTR_DONTFOLLOW, &cursor);
- check_cwd();
- if (e)
- break;
- alist = (attrlist_t *)buf;
- if (which < ent + alist->al_count) {
- aep = (attrlist_ent_t *)
- &buf[alist->al_offset[which - ent]];
- aname = aep->a_name;
+ while (bufname < bufend) {
+ if (which < ent) {
+ aname = bufname;
break;
}
- ent += alist->al_count;
- } while (alist->al_more);
+ ent++;
+ bufname += strlen(bufname) + 1;
+ }
if (aname == NULL) {
if (v)
printf(
free_pathname(&f);
return;
}
- e = attr_remove_path(&f, aname, ATTR_DONTFOLLOW) < 0 ? errno : 0;
+ if (attr_remove_path(&f, aname) < 0)
+ e = errno;
+ else
+ e = 0;
check_cwd();
if (v)
printf("%d/%d: attr_remove %s %s %d\n",
len = 1;
aval = malloc(len);
memset(aval, nameseq & 0xff, len);
- e = attr_set_path(&f, aname, aval, len, ATTR_DONTFOLLOW) < 0 ?
- errno : 0;
+ if (attr_set_path(&f, aname, aval, len) < 0)
+ e = errno;
+ else
+ e = 0;
check_cwd();
free(aval);
if (v)
/* Calculate offsets */
len = (random() % FILELEN_MAX) + 1;
- len &= ~(stat1.st_blksize - 1);
+ len = rounddown_64(len, stat1.st_blksize);
if (len == 0)
len = stat1.st_blksize;
if (len > stat1.st_size)
else
off1 = (off64_t)(lr % MIN(stat1.st_size - len, MAXFSIZE));
off1 %= maxfsize;
- off1 &= ~(stat1.st_blksize - 1);
+ off1 = rounddown_64(off1, stat1.st_blksize);
/*
* If srcfile == destfile, randomly generate destination ranges
lr = ((int64_t)random() << 32) + random();
off2 = (off64_t)(lr % max_off2);
off2 %= maxfsize;
- off2 &= ~(stat2.st_blksize - 1);
+ off2 = rounddown_64(off2, stat2.st_blksize);
} while (stat1.st_ino == stat2.st_ino && llabs(off2 - off1) < len);
/* Clone data blocks */
/* Never try to dedupe more than half of the src file. */
len = (random() % FILELEN_MAX) + 1;
- len &= ~(stat[0].st_blksize - 1);
+ len = rounddown_64(len, stat[0].st_blksize);
if (len == 0)
len = stat[0].st_blksize / 2;
if (len > stat[0].st_size / 2)
else
off[0] = (off64_t)(lr % MIN(stat[0].st_size - len, MAXFSIZE));
off[0] %= maxfsize;
- off[0] &= ~(stat[0].st_blksize - 1);
+ off[0] = rounddown_64(off[0], stat[0].st_blksize);
/*
* If srcfile == destfile[i], randomly generate destination ranges
else
off[i] = (off64_t)(lr % MIN(stat[i].st_size - len, MAXFSIZE));
off[i] %= maxfsize;
- off[i] &= ~(stat[i].st_blksize - 1);
+ off[i] = rounddown_64(off[i], stat[i].st_blksize);
} while (stat[0].st_ino == stat[i].st_ino &&
llabs(off[i] - off[0]) < len &&
tries++ < 10);
int v;
int v1;
- if (!get_fname(FT_DIRm, r, NULL, NULL, &fep, &v1))
+ if (!get_fname(FT_ANYDIR, r, NULL, NULL, &fep, &v1))
parid = -1;
else
parid = fep->id;
v |= v1;
if (!e) {
if (v) {
- (void)fent_to_name(&f, &flist[FT_DIR], fep);
+ (void)fent_to_name(&f, fep);
printf("%d/%d: creat - no filename from %s\n",
procid, opno, f.path);
}
" fallback to stat()\n",
procid, opno, f.path, st, errno);
diob.d_mem = diob.d_miniosz = stb.st_blksize;
- diob.d_maxiosz = INT_MAX & ~(diob.d_miniosz - 1);
+ diob.d_maxiosz = rounddown_64(INT_MAX, diob.d_miniosz);
}
dio_env = getenv("XFS_DIO_MIN");
" %s%s return %d, fallback to stat()\n",
procid, opno, f.path, st, errno);
diob.d_mem = diob.d_miniosz = stb.st_blksize;
- diob.d_maxiosz = INT_MAX & ~(diob.d_miniosz - 1);
+ diob.d_maxiosz = rounddown_64(INT_MAX, diob.d_miniosz);
}
dio_env = getenv("XFS_DIO_MIN");
*/
if ((mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)) &&
(opno % 2)) {
- off = ((off + stb.st_blksize - 1) & ~(stb.st_blksize - 1));
- len = ((len + stb.st_blksize - 1) & ~(stb.st_blksize - 1));
+ off = roundup_64(off, stb.st_blksize);
+ len = roundup_64(len, stb.st_blksize);
}
mode |= FALLOC_FL_KEEP_SIZE & random();
e = fallocate(fd, mode, (loff_t)off, (loff_t)len) < 0 ? errno : 0;
int v;
init_pathname(&f);
- if (!get_fname(FT_DIRm, r, &f, NULL, NULL, &v))
+ if (!get_fname(FT_ANYDIR, r, &f, NULL, NULL, &v))
append_pathname(&f, ".");
dir = opendir_path(&f);
check_cwd();
int xattr_num;
init_pathname(&f);
- if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, &fep, &v)) {
+ if (!get_fname(FT_REGFILE | FT_ANYDIR, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: getfattr - no filename\n", procid, opno);
goto out;
v |= v1;
if (!e) {
if (v) {
- (void)fent_to_name(&l, &flist[FT_DIR], fep);
+ (void)fent_to_name(&l, fep);
printf("%d/%d: link - no filename from %s\n",
procid, opno, l.path);
}
int buffer_len;
init_pathname(&f);
- if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, &fep, &v)) {
+ if (!get_fname(FT_REGFILE | FT_ANYDIR, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: listfattr - no filename\n", procid, opno);
goto out;
int v;
int v1;
- if (!get_fname(FT_DIRm, r, NULL, NULL, &fep, &v))
+ if (!get_fname(FT_ANYDIR, r, NULL, NULL, &fep, &v))
parid = -1;
else
parid = fep->id;
v |= v1;
if (!e) {
if (v) {
- (void)fent_to_name(&f, &flist[FT_DIR], fep);
+ (void)fent_to_name(&f, fep);
printf("%d/%d: mkdir - no filename from %s\n",
procid, opno, f.path);
}
int v;
int v1;
- if (!get_fname(FT_DIRm, r, NULL, NULL, &fep, &v))
+ if (!get_fname(FT_ANYDIR, r, NULL, NULL, &fep, &v))
parid = -1;
else
parid = fep->id;
v |= v1;
if (!e) {
if (v) {
- (void)fent_to_name(&f, &flist[FT_DIR], fep);
+ (void)fent_to_name(&f, fep);
printf("%d/%d: mknod - no filename from %s\n",
procid, opno, f.path);
}
lr = ((int64_t)random() << 32) + random();
off = (off64_t)(lr % stb.st_size);
- off &= (off64_t)(~(sysconf(_SC_PAGE_SIZE) - 1));
+ off = rounddown_64(off, sysconf(_SC_PAGE_SIZE));
len = (size_t)(random() % MIN(stb.st_size - off, FILELEN_MAX)) + 1;
flags = (random() % 2) ? MAP_SHARED : MAP_PRIVATE;
int xattr_num;
init_pathname(&f);
- if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, &fep, &v)) {
+ if (!get_fname(FT_REGFILE | FT_ANYDIR, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: removefattr - no filename\n", procid, opno);
goto out;
free_pathname(&f);
}
+struct print_flags renameat2_flags [] = {
+ { RENAME_NOREPLACE, "NOREPLACE"},
+ { RENAME_EXCHANGE, "EXCHANGE"},
+ { RENAME_WHITEOUT, "WHITEOUT"},
+ { -1, NULL}
+};
+
+#define translate_renameat2_flags(mode) \
+ ({translate_flags(mode, "|", renameat2_flags);})
+
void
-rename_f(int opno, long r)
+do_renameat2(int opno, long r, int mode)
{
fent_t *dfep;
int e;
int oldid;
int parid;
int oldparid;
+ int which;
int v;
int v1;
/* get an existing path for the source of the rename */
init_pathname(&f);
- if (!get_fname(FT_ANYm, r, &f, &flp, &fep, &v1)) {
+ which = (mode == RENAME_WHITEOUT) ? FT_DEVm : FT_ANYm;
+ if (!get_fname(which, r, &f, &flp, &fep, &v1)) {
if (v1)
- printf("%d/%d: rename - no filename\n", procid, opno);
+ printf("%d/%d: rename - no source filename\n",
+ procid, opno);
free_pathname(&f);
return;
}
- /* get an existing directory for the destination parent directory name */
- if (!get_fname(FT_DIRm, random(), NULL, NULL, &dfep, &v))
- parid = -1;
- else
- parid = dfep->id;
- v |= v1;
+ /*
+ * Both pathnames must exist for the RENAME_EXCHANGE, and in
+ * order to maintain filelist/filename integrity, we should
+ * restrict exchange operation to files of the same type.
+ */
+ if (mode == RENAME_EXCHANGE) {
+ which = 1 << (flp - flist);
+ init_pathname(&newf);
+ if (!get_fname(which, random(), &newf, NULL, &dfep, &v)) {
+ if (v)
+ printf("%d/%d: rename - no target filename\n",
+ procid, opno);
+ free_pathname(&newf);
+ free_pathname(&f);
+ return;
+ }
+ if (which == FT_DIRm && (fents_ancestor_check(fep, dfep) ||
+ fents_ancestor_check(dfep, fep))) {
+ if (v)
+ printf("%d/%d: rename(REXCHANGE) %s and %s "
+ "have ancestor-descendant relationship\n",
+ procid, opno, f.path, newf.path);
+ free_pathname(&newf);
+ free_pathname(&f);
+ return;
+ }
+ v |= v1;
+ id = dfep->id;
+ parid = dfep->parent;
+ } else {
+ /*
+ * Get an existing directory for the destination parent
+ * directory name.
+ */
+ if (!get_fname(FT_DIRm, random(), NULL, NULL, &dfep, &v))
+ parid = -1;
+ else
+ parid = dfep->id;
+ v |= v1;
- /* generate a new path using an existing parent directory in name */
- init_pathname(&newf);
- e = generate_fname(dfep, flp - flist, &newf, &id, &v1);
- v |= v1;
- if (!e) {
- if (v) {
- (void)fent_to_name(&f, &flist[FT_DIR], dfep);
- printf("%d/%d: rename - no filename from %s\n",
- procid, opno, f.path);
+ /*
+ * Generate a new path using an existing parent directory
+ * in name.
+ */
+ init_pathname(&newf);
+ e = generate_fname(dfep, flp - flist, &newf, &id, &v1);
+ v |= v1;
+ if (!e) {
+ if (v) {
+ (void)fent_to_name(&f, dfep);
+ printf("%d/%d: rename - no filename from %s\n",
+ procid, opno, f.path);
+ }
+ free_pathname(&newf);
+ free_pathname(&f);
+ return;
}
- free_pathname(&newf);
- free_pathname(&f);
- return;
}
- e = rename_path(&f, &newf) < 0 ? errno : 0;
+ e = rename_path(&f, &newf, mode) < 0 ? errno : 0;
check_cwd();
if (e == 0) {
int xattr_counter = fep->xattr_counter;
+ bool swap = (mode == RENAME_EXCHANGE) ? true : false;
+ int ft = flp - flist;
oldid = fep->id;
oldparid = fep->parent;
- if (flp - flist == FT_DIR)
- fix_parent(oldid, id);
-
- del_from_flist(flp - flist, fep - flp->fents);
- add_to_flist(flp - flist, id, parid, xattr_counter);
+ /*
+ * Swap the parent ids for RENAME_EXCHANGE, and replace the
+ * old parent id for the others.
+ */
+ if (ft == FT_DIR || ft == FT_SUBVOL)
+ fix_parent(oldid, id, swap);
+
+ if (mode == RENAME_WHITEOUT) {
+ fep->xattr_counter = 0;
+ add_to_flist(flp - flist, id, parid, xattr_counter);
+ } else if (mode == RENAME_EXCHANGE) {
+ fep->xattr_counter = dfep->xattr_counter;
+ dfep->xattr_counter = xattr_counter;
+ } else {
+ del_from_flist(flp - flist, fep - flp->fents);
+ add_to_flist(flp - flist, id, parid, xattr_counter);
+ }
}
if (v) {
- printf("%d/%d: rename %s to %s %d\n", procid, opno, f.path,
+ printf("%d/%d: rename(%s) %s to %s %d\n", procid,
+ opno, translate_renameat2_flags(mode), f.path,
newf.path, e);
if (e == 0) {
- printf("%d/%d: rename del entry: id=%d,parent=%d\n",
+ printf("%d/%d: rename source entry: id=%d,parent=%d\n",
procid, opno, oldid, oldparid);
- printf("%d/%d: rename add entry: id=%d,parent=%d\n",
+ printf("%d/%d: rename target entry: id=%d,parent=%d\n",
procid, opno, id, parid);
}
}
free_pathname(&f);
}
+void
+rename_f(int opno, long r)
+{
+ do_renameat2(opno, r, 0);
+}
+
+void
+rnoreplace_f(int opno, long r)
+{
+ do_renameat2(opno, r, RENAME_NOREPLACE);
+}
+
+void
+rexchange_f(int opno, long r)
+{
+ do_renameat2(opno, r, RENAME_EXCHANGE);
+}
+
+void
+rwhiteout_f(int opno, long r)
+{
+ do_renameat2(opno, r, RENAME_WHITEOUT);
+}
+
void
resvsp_f(int opno, long r)
{
int e;
pathname_t f;
fent_t *fep;
+ int oldid;
+ int oldparid;
int v;
init_pathname(&f);
}
e = rmdir_path(&f) < 0 ? errno : 0;
check_cwd();
- if (e == 0)
+ if (e == 0) {
+ oldid = fep->id;
+ oldparid = fep->parent;
del_from_flist(FT_DIR, fep - flist[FT_DIR].fents);
+ }
if (v) {
printf("%d/%d: rmdir %s %d\n", procid, opno, f.path, e);
if (e == 0)
printf("%d/%d: rmdir del entry: id=%d,parent=%d\n",
- procid, opno, fep->id, fep->parent);
+ procid, opno, oldid, oldparid);
}
free_pathname(&f);
}
int xattr_num;
init_pathname(&f);
- if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, &fep, &v)) {
+ if (!get_fname(FT_REGFILE | FT_ANYDIR, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: setfattr - no filename\n", procid, opno);
goto out;
free_pathname(&f);
}
+void
+snapshot_f(int opno, long r)
+{
+#ifdef HAVE_BTRFSUTIL_H
+ enum btrfs_util_error e;
+ pathname_t f;
+ pathname_t newf;
+ fent_t *fep;
+ int id;
+ int parid;
+ int v;
+ int v1;
+ int err;
+
+ init_pathname(&f);
+ if (!get_fname(FT_SUBVOLm, r, &f, NULL, &fep, &v)) {
+ if (v)
+ printf("%d/%d: snapshot - no subvolume\n", procid,
+ opno);
+ free_pathname(&f);
+ return;
+ }
+ init_pathname(&newf);
+ parid = fep->id;
+ err = generate_fname(fep, FT_SUBVOL, &newf, &id, &v1);
+ v |= v1;
+ if (!err) {
+ if (v) {
+ (void)fent_to_name(&f, fep);
+ printf("%d/%d: snapshot - no filename from %s\n",
+ procid, opno, f.path);
+ }
+ free_pathname(&f);
+ return;
+ }
+ e = btrfs_util_create_snapshot(f.path, newf.path, 0, NULL, NULL);
+ if (e == BTRFS_UTIL_OK)
+ add_to_flist(FT_SUBVOL, id, parid, 0);
+ if (v) {
+ printf("%d/%d: snapshot %s->%s %d(%s)\n", procid, opno,
+ f.path, newf.path, e, btrfs_util_strerror(e));
+ printf("%d/%d: snapshot add id=%d,parent=%d\n", procid, opno,
+ id, parid);
+ }
+ free_pathname(&newf);
+ free_pathname(&f);
+#endif
+}
+
void
stat_f(int opno, long r)
{
free_pathname(&f);
}
+void
+subvol_create_f(int opno, long r)
+{
+#ifdef HAVE_BTRFSUTIL_H
+ enum btrfs_util_error e;
+ pathname_t f;
+ fent_t *fep;
+ int id;
+ int parid;
+ int v;
+ int v1;
+ int err;
+
+ init_pathname(&f);
+ if (!get_fname(FT_ANYDIR, r, NULL, NULL, &fep, &v))
+ parid = -1;
+ else
+ parid = fep->id;
+ err = generate_fname(fep, FT_SUBVOL, &f, &id, &v1);
+ v |= v1;
+ if (!err) {
+ if (v) {
+ (void)fent_to_name(&f, fep);
+ printf("%d/%d: subvol_create - no filename from %s\n",
+ procid, opno, f.path);
+ }
+ free_pathname(&f);
+ return;
+ }
+ e = btrfs_util_create_subvolume(f.path, 0, NULL, NULL);
+ if (e == BTRFS_UTIL_OK)
+ add_to_flist(FT_SUBVOL, id, parid, 0);
+ if (v) {
+ printf("%d/%d: subvol_create %s %d(%s)\n", procid, opno,
+ f.path, e, btrfs_util_strerror(e));
+ printf("%d/%d: subvol_create add id=%d,parent=%d\n", procid,
+ opno, id, parid);
+ }
+ free_pathname(&f);
+#endif
+}
+
+void
+subvol_delete_f(int opno, long r)
+{
+#ifdef HAVE_BTRFSUTIL_H
+ enum btrfs_util_error e;
+ pathname_t f;
+ fent_t *fep;
+ int v;
+ int oldid;
+ int oldparid;
+
+ init_pathname(&f);
+ if (!get_fname(FT_SUBVOLm, r, &f, NULL, &fep, &v)) {
+ if (v)
+ printf("%d:%d: subvol_delete - no subvolume\n", procid,
+ opno);
+ free_pathname(&f);
+ return;
+ }
+ e = btrfs_util_delete_subvolume(f.path, 0);
+ check_cwd();
+ if (e == BTRFS_UTIL_OK) {
+ oldid = fep->id;
+ oldparid = fep->parent;
+ delete_subvol_children(oldid);
+ del_from_flist(FT_SUBVOL, fep - flist[FT_SUBVOL].fents);
+ }
+ if (v) {
+ printf("%d/%d: subvol_delete %s %d(%s)\n", procid, opno, f.path,
+ e, btrfs_util_strerror(e));
+ if (e == BTRFS_UTIL_OK)
+ printf("%d/%d: subvol_delete del entry: id=%d,parent=%d\n",
+ procid, opno, oldid, oldparid);
+ }
+ free_pathname(&f);
+#endif
+}
+
void
symlink_f(int opno, long r)
{
int v1;
char *val;
- if (!get_fname(FT_DIRm, r, NULL, NULL, &fep, &v))
+ if (!get_fname(FT_ANYDIR, r, NULL, NULL, &fep, &v))
parid = -1;
else
parid = fep->id;
v |= v1;
if (!e) {
if (v) {
- (void)fent_to_name(&f, &flist[FT_DIR], fep);
+ (void)fent_to_name(&f, fep);
printf("%d/%d: symlink - no filename from %s\n",
procid, opno, f.path);
}
pathname_t f;
fent_t *fep;
flist_t *flp;
+ int oldid;
+ int oldparid;
int v;
init_pathname(&f);
}
e = unlink_path(&f) < 0 ? errno : 0;
check_cwd();
- if (e == 0)
+ if (e == 0) {
+ oldid = fep->id;
+ oldparid = fep->parent;
del_from_flist(flp - flist, fep - flp->fents);
+ }
if (v) {
printf("%d/%d: unlink %s %d\n", procid, opno, f.path, e);
if (e == 0)
printf("%d/%d: unlink del entry: id=%d,parent=%d\n",
- procid, opno, fep->id, fep->parent);
+ procid, opno, oldid, oldparid);
}
free_pathname(&f);
}
close(fd);
}
+void
+uring_read_f(int opno, long r)
+{
+#ifdef URING
+ do_uring_rw(opno, r, O_RDONLY);
+#endif
+}
+
+void
+uring_write_f(int opno, long r)
+{
+#ifdef URING
+ do_uring_rw(opno, r, O_WRONLY);
+#endif
+}
+
void
write_f(int opno, long r)
{