tools/nolibc: remove the old sys_stat support
The statx manpage [1] shows that it has been supported from Linux 4.11
and glibc 2.28, the Linux support can be checked for all of the
architectures with this command:
$ git grep -r statx v4.11 arch/ include/uapi/asm-generic/unistd.h \
| grep -E "aarch64|arm|mips|s390|x86|:include/uapi"
Besides riscv and loongarch, all of the nolibc supported architectures
have added sys_statx from Linux v4.11. riscv is mainlined to v4.15,
loongarch is mainlined to v5.19, both of them use the generic unistd.h,
so, they have added sys_statx from their first mainline versions.
The current oldest stable branch is v4.14, only reserving sys_statx
still preserves compatibility with all of the supported stable branches,
So, let's remove the old arch related and dependent sys_stat support
completely.
This is friendly to the future new architecture porting.
[1]: https://man7.org/linux/man-pages/man2/statx.2.html
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Zhangjin Wu
Willy Tarreau
parent
bff60150f7
commit
af93807eae
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@ -9,34 +9,6 @@
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#include "compiler.h"
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/* The struct returned by the newfstatat() syscall. Differs slightly from the
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* x86_64's stat one by field ordering, so be careful.
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*/
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struct sys_stat_struct {
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unsigned long st_dev;
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unsigned long st_ino;
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unsigned int st_mode;
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unsigned int st_nlink;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned long st_rdev;
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unsigned long __pad1;
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long st_size;
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int st_blksize;
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int __pad2;
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long st_blocks;
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long st_atime;
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unsigned long st_atime_nsec;
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long st_mtime;
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unsigned long st_mtime_nsec;
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long st_ctime;
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unsigned long st_ctime_nsec;
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unsigned int __unused[2];
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};
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/* Syscalls for AARCH64 :
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* - registers are 64-bit
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* - stack is 16-byte aligned
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@ -9,43 +9,6 @@
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#include "compiler.h"
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/* The struct returned by the stat() syscall, 32-bit only, the syscall returns
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* exactly 56 bytes (stops before the unused array). In big endian, the format
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* differs as devices are returned as short only.
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*/
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struct sys_stat_struct {
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#if defined(__ARMEB__)
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unsigned short st_dev;
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unsigned short __pad1;
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#else
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unsigned long st_dev;
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#endif
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unsigned long st_ino;
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unsigned short st_mode;
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unsigned short st_nlink;
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unsigned short st_uid;
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unsigned short st_gid;
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#if defined(__ARMEB__)
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unsigned short st_rdev;
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unsigned short __pad2;
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#else
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unsigned long st_rdev;
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#endif
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unsigned long st_size;
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unsigned long st_blksize;
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unsigned long st_blocks;
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unsigned long st_atime;
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unsigned long st_atime_nsec;
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unsigned long st_mtime;
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unsigned long st_mtime_nsec;
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unsigned long st_ctime;
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unsigned long st_ctime_nsec;
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unsigned long __unused[2];
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};
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/* Syscalls for ARM in ARM or Thumb modes :
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* - registers are 32-bit
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* - stack is 8-byte aligned
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@ -9,32 +9,6 @@
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#include "compiler.h"
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/* The struct returned by the stat() syscall, 32-bit only, the syscall returns
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* exactly 56 bytes (stops before the unused array).
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*/
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struct sys_stat_struct {
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unsigned long st_dev;
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unsigned long st_ino;
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unsigned short st_mode;
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unsigned short st_nlink;
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unsigned short st_uid;
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unsigned short st_gid;
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unsigned long st_rdev;
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unsigned long st_size;
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unsigned long st_blksize;
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unsigned long st_blocks;
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unsigned long st_atime;
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unsigned long st_atime_nsec;
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unsigned long st_mtime;
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unsigned long st_mtime_nsec;
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unsigned long st_ctime;
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unsigned long st_ctime_nsec;
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unsigned long __unused[2];
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};
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/* Syscalls for i386 :
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* - mostly similar to x86_64
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* - registers are 32-bit
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@ -9,34 +9,6 @@
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#include "compiler.h"
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/* The struct returned by the stat() syscall. 88 bytes are returned by the
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* syscall.
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*/
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struct sys_stat_struct {
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unsigned int st_dev;
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long st_pad1[3];
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unsigned long st_ino;
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unsigned int st_mode;
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unsigned int st_nlink;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned int st_rdev;
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long st_pad2[2];
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long st_size;
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long st_pad3;
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long st_atime;
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long st_atime_nsec;
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long st_mtime;
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long st_mtime_nsec;
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long st_ctime;
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long st_ctime_nsec;
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long st_blksize;
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long st_blocks;
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long st_pad4[14];
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};
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/* Syscalls for MIPS ABI O32 :
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* - WARNING! there's always a delayed slot!
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* - WARNING again, the syntax is different, registers take a '$' and numbers
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@ -9,29 +9,6 @@
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#include "compiler.h"
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struct sys_stat_struct {
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unsigned long st_dev; /* Device. */
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unsigned long st_ino; /* File serial number. */
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unsigned int st_mode; /* File mode. */
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unsigned int st_nlink; /* Link count. */
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unsigned int st_uid; /* User ID of the file's owner. */
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unsigned int st_gid; /* Group ID of the file's group. */
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unsigned long st_rdev; /* Device number, if device. */
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unsigned long __pad1;
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long st_size; /* Size of file, in bytes. */
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int st_blksize; /* Optimal block size for I/O. */
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int __pad2;
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long st_blocks; /* Number 512-byte blocks allocated. */
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long st_atime; /* Time of last access. */
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unsigned long st_atime_nsec;
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long st_mtime; /* Time of last modification. */
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unsigned long st_mtime_nsec;
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long st_ctime; /* Time of last status change. */
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unsigned long st_ctime_nsec;
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unsigned int __unused4;
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unsigned int __unused5;
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};
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#if __riscv_xlen == 64
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#define PTRLOG "3"
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#define SZREG "8"
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@ -10,31 +10,6 @@
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#include "compiler.h"
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/* The struct returned by the stat() syscall, equivalent to stat64(). The
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* syscall returns 116 bytes and stops in the middle of __unused.
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*/
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struct sys_stat_struct {
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unsigned long st_dev;
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unsigned long st_ino;
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unsigned long st_nlink;
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unsigned int st_mode;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned int __pad1;
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unsigned long st_rdev;
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unsigned long st_size;
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unsigned long st_atime;
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unsigned long st_atime_nsec;
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unsigned long st_mtime;
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unsigned long st_mtime_nsec;
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unsigned long st_ctime;
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unsigned long st_ctime_nsec;
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unsigned long st_blksize;
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long st_blocks;
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unsigned long __unused[3];
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};
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/* Syscalls for s390:
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* - registers are 64-bit
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* - syscall number is passed in r1
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@ -9,33 +9,6 @@
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#include "compiler.h"
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/* The struct returned by the stat() syscall, equivalent to stat64(). The
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* syscall returns 116 bytes and stops in the middle of __unused.
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*/
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struct sys_stat_struct {
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unsigned long st_dev;
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unsigned long st_ino;
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unsigned long st_nlink;
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unsigned int st_mode;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned int __pad0;
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unsigned long st_rdev;
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long st_size;
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long st_blksize;
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long st_blocks;
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unsigned long st_atime;
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unsigned long st_atime_nsec;
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unsigned long st_mtime;
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unsigned long st_mtime_nsec;
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unsigned long st_ctime;
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unsigned long st_ctime_nsec;
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long __unused[3];
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};
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/* Syscalls for x86_64 :
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* - registers are 64-bit
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* - syscall number is passed in rax
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@ -943,15 +943,19 @@ pid_t setsid(void)
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return __sysret(sys_setsid());
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}
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#if defined(__NR_statx)
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/*
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* int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf);
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* int stat(const char *path, struct stat *buf);
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*/
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static __attribute__((unused))
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int sys_statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)
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{
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#ifdef __NR_statx
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return my_syscall5(__NR_statx, fd, path, flags, mask, buf);
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#else
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return -ENOSYS;
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#endif
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}
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static __attribute__((unused))
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{
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return __sysret(sys_statx(fd, path, flags, mask, buf));
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}
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#endif
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/*
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* int stat(const char *path, struct stat *buf);
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* Warning: the struct stat's layout is arch-dependent.
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*/
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#if defined(__NR_statx) && !defined(__NR_newfstatat) && !defined(__NR_stat)
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/*
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* Maybe we can just use statx() when available for all architectures?
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*/
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static __attribute__((unused))
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int sys_stat(const char *path, struct stat *buf)
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int stat(const char *path, struct stat *buf)
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{
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struct statx statx;
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long ret;
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ret = sys_statx(AT_FDCWD, path, AT_NO_AUTOMOUNT, STATX_BASIC_STATS, &statx);
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ret = __sysret(sys_statx(AT_FDCWD, path, AT_NO_AUTOMOUNT, STATX_BASIC_STATS, &statx));
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if (ret == -1)
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return ret;
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buf->st_dev = ((statx.stx_dev_minor & 0xff)
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| (statx.stx_dev_major << 8)
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| ((statx.stx_dev_minor & ~0xff) << 12));
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@ -997,47 +995,8 @@ int sys_stat(const char *path, struct stat *buf)
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buf->st_mtim.tv_nsec = statx.stx_mtime.tv_nsec;
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buf->st_ctim.tv_sec = statx.stx_ctime.tv_sec;
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buf->st_ctim.tv_nsec = statx.stx_ctime.tv_nsec;
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return ret;
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}
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#else
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static __attribute__((unused))
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int sys_stat(const char *path, struct stat *buf)
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{
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struct sys_stat_struct stat;
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long ret;
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#ifdef __NR_newfstatat
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/* only solution for arm64 */
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ret = my_syscall4(__NR_newfstatat, AT_FDCWD, path, &stat, 0);
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#elif defined(__NR_stat)
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ret = my_syscall2(__NR_stat, path, &stat);
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#else
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return -ENOSYS;
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#endif
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buf->st_dev = stat.st_dev;
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buf->st_ino = stat.st_ino;
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buf->st_mode = stat.st_mode;
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buf->st_nlink = stat.st_nlink;
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buf->st_uid = stat.st_uid;
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buf->st_gid = stat.st_gid;
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buf->st_rdev = stat.st_rdev;
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buf->st_size = stat.st_size;
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buf->st_blksize = stat.st_blksize;
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buf->st_blocks = stat.st_blocks;
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buf->st_atim.tv_sec = stat.st_atime;
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buf->st_atim.tv_nsec = stat.st_atime_nsec;
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buf->st_mtim.tv_sec = stat.st_mtime;
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buf->st_mtim.tv_nsec = stat.st_mtime_nsec;
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buf->st_ctim.tv_sec = stat.st_ctime;
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buf->st_ctim.tv_nsec = stat.st_ctime_nsec;
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return ret;
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}
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#endif
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static __attribute__((unused))
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int stat(const char *path, struct stat *buf)
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{
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return __sysret(sys_stat(path, buf));
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return 0;
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}
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@ -15,8 +15,8 @@
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/* Only the generic macros and types may be defined here. The arch-specific
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* ones such as the O_RDONLY and related macros used by fcntl() and open(), or
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* the layout of sys_stat_struct must not be defined here.
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* ones such as the O_RDONLY and related macros used by fcntl() and open()
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* must not be defined here.
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*/
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/* stat flags (WARNING, octal here). We need to check for an existing
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