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io_uring: add prep functions for current working directory

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This is done for unlink, rename, mkdir, symlink and link.

Signed-off-by: Usama Arif <usama.arif@bytedance.com>
This commit is contained in:
Usama Arif
2022-05-31 22:21:43 +01:00
parent 66b727b1fa
commit 7b7a2014ec
8 changed files with 135 additions and 18 deletions
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man/io_uring_prep_linkat.3
+21 -2
View File
@@ -17,6 +17,11 @@ io_uring_prep_linkat \- prepare a linkat request
.BI " int " newdirfd ","
.BI " const char *" newpath ","
.BI " int " flags ");"
.PP
.BI "void io_uring_prep_link(struct io_uring_sqe *" sqe ","
.BI " const char *" oldpath ","
.BI " const char *" newpath ","
.BI " int " flags ");"
.fi
.SH DESCRIPTION
.PP
@@ -34,11 +39,24 @@ and the new path pointed to by
.I newpath
and using the specified flags in
.IR flags .
This function prepares an async
.BR linkat (2)
request. See that man page for details.
The
.BR io_uring_prep_link (3)
function prepares a link request. The submission queue entry
.I sqe
is setup to use the old path pointed to by
.I oldpath
and the new path pointed to by
.IR newpath ,
both relative to the current working directory and using the specified flags in
.IR flags .
This function prepares an async
.BR link (2)
request. See that man page for details.
.SH RETURN VALUE
None
.SH ERRORS
@@ -69,4 +87,5 @@ flag passed back from
.SH SEE ALSO
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR linkat (2)
.BR linkat (2),
.BR link (2)
man/io_uring_prep_mkdirat.3
+22 -4
View File
@@ -15,24 +15,41 @@ io_uring_prep_mkdirat \- prepare an mkdirat request
.BI " int " dirfd ","
.BI " const char *" path ","
.BI " mode_t " mode ");"
.PP
.BI "void io_uring_prep_mkdir(struct io_uring_sqe *" sqe ","
.BI " const char *" path ","
.BI " mode_t " mode ");"
.fi
.SH DESCRIPTION
.PP
The
.BR io_uring_prep_mkdirat (3)
function prepares an mkdirat request. The submission queue entry
function prepares a mkdirat request. The submission queue entry
.I sqe
is setup to use the directory file descriptor pointed to by
.I dirfd
to start an mkdirat operation on the path identified by
to start a mkdirat operation on the path identified by
.I path
with the mode given in
.IR mode .
This function prepares an async
.BR mkdirat (2)
request. See that man page for details.
The
.BR io_uring_prep_mkdir (3)
function prepares a mkdir request. The submission queue entry
.I sqe
is setup to use the current working directory to start a mkdir
operation on the path identified by
.I path
with the mode given in
.IR mode .
This function prepares an async
.BR mkdir (2)
request. See that man page for details.
.SH RETURN VALUE
None
.SH ERRORS
@@ -63,4 +80,5 @@ flag passed back from
.SH SEE ALSO
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR mkdirat (2)
.BR mkdirat (2),
.BR mkdir (2)
man/io_uring_prep_renameat.3
+21 -2
View File
@@ -17,6 +17,11 @@ io_uring_prep_renameat \- prepare a renameat request
.BI " int " newdirfd ","
.BI " const char *" newpath ","
.BI " int " flags ");"
.PP
.BI "void io_uring_prep_rename(struct io_uring_sqe *" sqe ","
.BI " const char *" oldpath ","
.BI " const char *" newpath ","
.BI " int " flags ");"
.fi
.SH DESCRIPTION
.PP
@@ -34,7 +39,6 @@ and the new path pointed to by
.I newpath
and using the specified flags in
.IR flags .
This function prepares an async
.BR renameat2 (2)
request. If
@@ -43,6 +47,20 @@ is zero, then this call is similar to the
.BR renameat (2)
system call. See those man page for details.
The
.BR io_uring_prep_rename (3)
function prepares a rename request. The submission queue entry
.I sqe
is setup to use the old path pointed to by
.I oldpath
with the new path pointed to by
.IR newpath ,
both relative to the current working directory and using the specified flags in
.IR flags .
This function prepares an async
.BR rename (2)
request See that man page for details.
.SH RETURN VALUE
None
.SH ERRORS
@@ -74,4 +92,5 @@ flag passed back from
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR renameat (2),
.BR renameat2 (2)
.BR renameat2 (2),
.BR rename (2)
man/io_uring_prep_symlinkat.3
+18 -2
View File
@@ -15,6 +15,10 @@ io_uring_prep_symlinkat \- prepare a symlinkat request
.BI " const char *" target ","
.BI " int " newdirfd ","
.BI " const char *" linkpath ");"
.PP
.BI "void io_uring_prep_symlink(struct io_uring_sqe *" sqe ","
.BI " const char *" target ","
.BI " const char *" linkpath ");"
.fi
.SH DESCRIPTION
.PP
@@ -28,11 +32,22 @@ to the new destination indicated by
.I newdirfd
and
.IR linkpath .
This function prepares an async
.BR symlinkat (2)
request. See that man page for details.
The
.BR io_uring_prep_symlink (3)
function prepares a symlink request. The submission queue entry
.I sqe
is setup to symlink the target path pointed to by
.I target
to the new destination indicated by
.I linkpath
relative to the the current working directory. This function prepares an async
.BR symlink (2)
request. See that man page for details.
.SH RETURN VALUE
None
.SH ERRORS
@@ -63,4 +78,5 @@ flag passed back from
.SH SEE ALSO
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR symlinkat (2)
.BR symlinkat (2),
.BR symlink (2)
man/io_uring_prep_unlinkat.3
+19 -2
View File
@@ -15,6 +15,10 @@ io_uring_prep_unlinkat \- prepare an unlinkat request
.BI " int " dirfd ","
.BI " const char *" path ","
.BI " int " flags ");"
.PP
.BI "void io_uring_prep_unlink(struct io_uring_sqe *" sqe ","
.BI " const char *" path ","
.BI " int " flags ");"
.fi
.SH DESCRIPTION
.PP
@@ -28,11 +32,23 @@ to start an unlinkat operation on the path identified by
.I path
and using the flags given in
.IR flags .
This function prepares an async
.BR unlinkat (2)
request. See that man page for details.
The
.BR io_uring_prep_unlink (3)
function prepares an unlink request. The submission queue entry
.I sqe
is setup to start an unlinkat operation on the path identified by
.I path
relative to the current working directory and using the flags given in
.IR flags .
This function prepares an async
.BR unlink (2)
request. See that man page for details.
.SH RETURN VALUE
None
.SH ERRORS
@@ -63,4 +79,5 @@ flag passed back from
.SH SEE ALSO
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR unlinkat (2)
.BR unlinkat (2),
.BR unlink (2)
src/include/liburing.h
+31
View File
@@ -18,6 +18,7 @@
#include <stdbool.h>
#include <inttypes.h>
#include <time.h>
#include <fcntl.h>
#include <sched.h>
#include <linux/swab.h>
#include "liburing/compat.h"
@@ -729,6 +730,12 @@ static inline void io_uring_prep_unlinkat(struct io_uring_sqe *sqe, int dfd,
sqe->unlink_flags = (__u32) flags;
}
static inline void io_uring_prep_unlink(struct io_uring_sqe *sqe,
const char *path, int flags)
{
io_uring_prep_unlinkat(sqe, AT_FDCWD, path, flags);
}
static inline void io_uring_prep_renameat(struct io_uring_sqe *sqe, int olddfd,
const char *oldpath, int newdfd,
const char *newpath, int flags)
@@ -739,6 +746,12 @@ static inline void io_uring_prep_renameat(struct io_uring_sqe *sqe, int olddfd,
sqe->rename_flags = (__u32) flags;
}
static inline void io_uring_prep_rename(struct io_uring_sqe *sqe,
const char *oldpath, const char *newpath)
{
io_uring_prep_renameat(sqe, AT_FDCWD, oldpath, AT_FDCWD, newpath, 0);
}
static inline void io_uring_prep_sync_file_range(struct io_uring_sqe *sqe,
int fd, unsigned len,
__u64 offset, int flags)
@@ -753,6 +766,12 @@ static inline void io_uring_prep_mkdirat(struct io_uring_sqe *sqe, int dfd,
io_uring_prep_rw(IORING_OP_MKDIRAT, sqe, dfd, path, mode, 0);
}
static inline void io_uring_prep_mkdir(struct io_uring_sqe *sqe,
const char *path, mode_t mode)
{
io_uring_prep_mkdirat(sqe, AT_FDCWD, path, mode);
}
static inline void io_uring_prep_symlinkat(struct io_uring_sqe *sqe,
const char *target, int newdirfd,
const char *linkpath)
@@ -761,6 +780,12 @@ static inline void io_uring_prep_symlinkat(struct io_uring_sqe *sqe,
(uint64_t) (uintptr_t) linkpath);
}
static inline void io_uring_prep_symlink(struct io_uring_sqe *sqe,
const char *target, const char *linkpath)
{
io_uring_prep_symlinkat(sqe, target, AT_FDCWD, linkpath);
}
static inline void io_uring_prep_linkat(struct io_uring_sqe *sqe, int olddfd,
const char *oldpath, int newdfd,
const char *newpath, int flags)
@@ -770,6 +795,12 @@ static inline void io_uring_prep_linkat(struct io_uring_sqe *sqe, int olddfd,
sqe->hardlink_flags = (__u32) flags;
}
static inline void io_uring_prep_link(struct io_uring_sqe *sqe,
const char *oldpath, const char *newpath, int flags)
{
io_uring_prep_linkat(sqe, AT_FDCWD, oldpath, AT_FDCWD, newpath, flags);
}
static inline void io_uring_prep_msg_ring(struct io_uring_sqe *sqe, int fd,
unsigned int len, __u64 data,
unsigned int flags)
test/rename.c
+2 -5
View File
@@ -26,11 +26,8 @@ static int test_rename(struct io_uring *ring, const char *old, const char *new)
}
memset(sqe, 0, sizeof(*sqe));
sqe->opcode = IORING_OP_RENAMEAT;
sqe->fd = AT_FDCWD;
sqe->addr2 = (unsigned long) new;
sqe->addr = (unsigned long) old;
sqe->len = AT_FDCWD;
io_uring_prep_rename(sqe, old, new);
ret = io_uring_submit(ring);
if (ret <= 0) {
test/unlink.c
+1 -1
View File
@@ -24,7 +24,7 @@ static int test_unlink(struct io_uring *ring, const char *old)
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_unlinkat(sqe, AT_FDCWD, old, 0);
io_uring_prep_unlink(sqe, old, 0);
ret = io_uring_submit(ring);
if (ret <= 0) {