mirrors/musl
0
0
Fork 0
mirror of git://git.musl-libc.org/musl synced 2024-11-23 18:14:19 +08:00
Code Issues Packages Projects Releases Wiki Activity

use new SYS_fchmodat2 syscall to implement fchmodat with flags

Browse Source 
commit 0dc4824479 worked around for lack
of flags argument in syscall for fchmodat.

linux 6.6 introduced a new syscall, SYS_fchmodat2, fixing this
deficiency. use it if any flags are passed, and fallback to the old
strategy on ENOSYS. continue using the old syscall when there are no
flags. this is the exact same strategy used when SYS_faccessat2 was used
to implement faccessat with flags.
This commit is contained in:
Gaël PORTAY 2024-02-18 03:26:50 +01:00 committed by Rich Felker
parent 3d5c9fe39f
commit d0ed307e6f
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/stat/fchmodat.c
View File

@ -7,11 +7,14 @@ int fchmodat(int fd, const char *path, mode_t mode, int flag)
{
if (!flag) return syscall(SYS_fchmodat, fd, path, mode);
int ret = __syscall(SYS_fchmodat2, fd, path, mode, flag);
if (ret != -ENOSYS) return __syscall_ret(ret);
if (flag != AT_SYMLINK_NOFOLLOW)
return __syscall_ret(-EINVAL);
struct stat st;
int ret, fd2;
int fd2;
char proc[15+3*sizeof(int)];
if (fstatat(fd, path, &st, flag))