diff options
Diffstat (limited to 'vendor/rustix/src/backend/libc/fs/syscalls.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/fs/syscalls.rs | 143 |
1 files changed, 114 insertions, 29 deletions
diff --git a/vendor/rustix/src/backend/libc/fs/syscalls.rs b/vendor/rustix/src/backend/libc/fs/syscalls.rs index 5df25daa9..5e0b62f8e 100644 --- a/vendor/rustix/src/backend/libc/fs/syscalls.rs +++ b/vendor/rustix/src/backend/libc/fs/syscalls.rs @@ -1,13 +1,20 @@ //! libc syscalls supporting `rustix::fs`. use crate::backend::c; -#[cfg(any(apple, linux_kernel, feature = "alloc"))] +#[cfg(any( + apple, + linux_kernel, + feature = "alloc", + all(linux_kernel, feature = "procfs") +))] use crate::backend::conv::ret_usize; use crate::backend::conv::{borrowed_fd, c_str, ret, ret_c_int, ret_off_t, ret_owned_fd}; use crate::fd::{BorrowedFd, OwnedFd}; use crate::ffi::CStr; #[cfg(apple)] use crate::ffi::CString; +#[cfg(not(any(target_os = "espidf", target_os = "vita")))] +use crate::fs::Access; #[cfg(not(any( apple, netbsdlike, @@ -16,6 +23,7 @@ use crate::ffi::CString; target_os = "espidf", target_os = "haiku", target_os = "redox", + target_os = "vita", )))] use crate::fs::Advice; #[cfg(not(any(target_os = "espidf", target_os = "redox")))] @@ -28,9 +36,10 @@ use crate::fs::AtFlags; target_os = "espidf", target_os = "nto", target_os = "redox", + target_os = "vita", )))] use crate::fs::FallocateFlags; -#[cfg(not(any(target_os = "espidf", target_os = "wasi")))] +#[cfg(not(any(target_os = "espidf", target_os = "vita", target_os = "wasi")))] use crate::fs::FlockOperation; #[cfg(any(linux_kernel, target_os = "freebsd"))] use crate::fs::MemfdFlags; @@ -43,12 +52,19 @@ use crate::fs::SealFlags; target_os = "netbsd", target_os = "nto", target_os = "redox", + target_os = "vita", target_os = "wasi", )))] use crate::fs::StatFs; -#[cfg(not(target_os = "espidf"))] -use crate::fs::{Access, Timestamps}; -#[cfg(not(any(apple, target_os = "espidf", target_os = "redox", target_os = "wasi")))] +#[cfg(not(any(target_os = "espidf", target_os = "vita")))] +use crate::fs::Timestamps; +#[cfg(not(any( + apple, + target_os = "espidf", + target_os = "redox", + target_os = "vita", + target_os = "wasi" +)))] use crate::fs::{Dev, FileType}; use crate::fs::{Mode, OFlags, SeekFrom, Stat}; #[cfg(not(any(target_os = "haiku", target_os = "redox", target_os = "wasi")))] @@ -125,7 +141,7 @@ fn open_via_syscall(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<Owned pub(crate) fn open(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<OwnedFd> { // Work around <https://sourceware.org/bugzilla/show_bug.cgi?id=17523>. // glibc versions before 2.25 don't handle `O_TMPFILE` correctly. - #[cfg(all(unix, target_env = "gnu"))] + #[cfg(all(unix, target_env = "gnu", not(target_os = "hurd")))] if oflags.contains(OFlags::TMPFILE) && crate::backend::if_glibc_is_less_than_2_25() { return open_via_syscall(path, oflags, mode); } @@ -153,7 +169,7 @@ pub(crate) fn open(path: &CStr, oflags: OFlags, mode: Mode) -> io::Result<OwnedF /// Use a direct syscall (via libc) for `openat`. /// /// This is only currently necessary as a workaround for old glibc; see below. -#[cfg(all(unix, target_env = "gnu"))] +#[cfg(all(unix, target_env = "gnu", not(target_os = "hurd")))] fn openat_via_syscall( dirfd: BorrowedFd<'_>, path: &CStr, @@ -188,7 +204,7 @@ pub(crate) fn openat( ) -> io::Result<OwnedFd> { // Work around <https://sourceware.org/bugzilla/show_bug.cgi?id=17523>. // glibc versions before 2.25 don't handle `O_TMPFILE` correctly. - #[cfg(all(unix, target_env = "gnu"))] + #[cfg(all(unix, target_env = "gnu", not(target_os = "hurd")))] if oflags.contains(OFlags::TMPFILE) && crate::backend::if_glibc_is_less_than_2_25() { return openat_via_syscall(dirfd, path, oflags, mode); } @@ -227,6 +243,7 @@ pub(crate) fn openat( target_os = "netbsd", target_os = "nto", target_os = "redox", + target_os = "vita", target_os = "wasi", )))] #[inline] @@ -258,7 +275,10 @@ pub(crate) fn readlink(path: &CStr, buf: &mut [u8]) -> io::Result<usize> { } } -#[cfg(all(feature = "alloc", not(target_os = "redox")))] +#[cfg(all( + any(feature = "alloc", all(linux_kernel, feature = "procfs")), + not(target_os = "redox") +))] #[inline] pub(crate) fn readlinkat( dirfd: BorrowedFd<'_>, @@ -501,8 +521,6 @@ pub(crate) fn renameat2( } } -/// At present, `libc` only has `renameat2` defined for glibc. On other -/// ABIs, `RenameFlags` has no flags defined, and we use plain `renameat`. #[cfg(any( target_os = "android", all(target_os = "linux", not(target_env = "gnu")), @@ -515,8 +533,32 @@ pub(crate) fn renameat2( new_path: &CStr, flags: RenameFlags, ) -> io::Result<()> { - assert!(flags.is_empty()); - renameat(old_dirfd, old_path, new_dirfd, new_path) + // At present, `libc` only has `renameat2` defined for glibc. If we have + // no flags, we can use plain `renameat`, but otherwise we use `syscall!`. + // to call `renameat2` ourselves. + if flags.is_empty() { + renameat(old_dirfd, old_path, new_dirfd, new_path) + } else { + syscall! { + fn renameat2( + olddirfd: c::c_int, + oldpath: *const c::c_char, + newdirfd: c::c_int, + newpath: *const c::c_char, + flags: c::c_uint + ) via SYS_renameat2 -> c::c_int + } + + unsafe { + ret(renameat2( + borrowed_fd(old_dirfd), + c_str(old_path), + borrowed_fd(new_dirfd), + c_str(new_path), + flags.bits(), + )) + } + } } pub(crate) fn symlink(old_path: &CStr, new_path: &CStr) -> io::Result<()> { @@ -680,12 +722,17 @@ fn statat_old(dirfd: BorrowedFd<'_>, path: &CStr, flags: AtFlags) -> io::Result< } } -#[cfg(not(any(target_os = "espidf", target_os = "emscripten")))] +#[cfg(not(any(target_os = "espidf", target_os = "emscripten", target_os = "vita")))] pub(crate) fn access(path: &CStr, access: Access) -> io::Result<()> { unsafe { ret(c::access(c_str(path), access.bits())) } } -#[cfg(not(any(target_os = "emscripten", target_os = "espidf", target_os = "redox")))] +#[cfg(not(any( + target_os = "emscripten", + target_os = "espidf", + target_os = "redox", + target_os = "vita" +)))] pub(crate) fn accessat( dirfd: BorrowedFd<'_>, path: &CStr, @@ -751,7 +798,7 @@ pub(crate) fn accessat( Ok(()) } -#[cfg(not(any(target_os = "espidf", target_os = "redox")))] +#[cfg(not(any(target_os = "espidf", target_os = "redox", target_os = "vita")))] pub(crate) fn utimensat( dirfd: BorrowedFd<'_>, path: &CStr, @@ -831,8 +878,8 @@ pub(crate) fn utimensat( )); } - // `setattrlistat` was introduced in 10.13 along with `utimensat`, so if - // we don't have `utimensat`, we don't have `setattrlistat` either. + // `setattrlistat` was introduced in 10.13 along with `utimensat`, so + // if we don't have `utimensat`, we don't have `setattrlistat` either. // Emulate it using `fork`, and `fchdir` and [`setattrlist`]. // // [`setattrlist`]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/setattrlist.2.html @@ -925,7 +972,11 @@ fn utimensat_old( .tv_sec .try_into() .map_err(|_| io::Errno::OVERFLOW)?, - tv_nsec: times.last_access.tv_nsec, + tv_nsec: times + .last_access + .tv_nsec + .try_into() + .map_err(|_| io::Errno::OVERFLOW)?, }, c::timespec { tv_sec: times @@ -933,7 +984,11 @@ fn utimensat_old( .tv_sec .try_into() .map_err(|_| io::Errno::OVERFLOW)?, - tv_nsec: times.last_modification.tv_nsec, + tv_nsec: times + .last_modification + .tv_nsec + .try_into() + .map_err(|_| io::Errno::OVERFLOW)?, }, ]; unsafe { @@ -1054,7 +1109,13 @@ pub(crate) fn chownat( } } -#[cfg(not(any(apple, target_os = "espidf", target_os = "redox", target_os = "wasi")))] +#[cfg(not(any( + apple, + target_os = "espidf", + target_os = "redox", + target_os = "vita", + target_os = "wasi" +)))] pub(crate) fn mknodat( dirfd: BorrowedFd<'_>, path: &CStr, @@ -1133,6 +1194,7 @@ pub(crate) fn copy_file_range( target_os = "espidf", target_os = "haiku", target_os = "redox", + target_os = "vita", )))] pub(crate) fn fadvise(fd: BorrowedFd<'_>, offset: u64, len: u64, advice: Advice) -> io::Result<()> { let offset = offset as i64; @@ -1189,6 +1251,7 @@ pub(crate) fn fcntl_add_seals(fd: BorrowedFd<'_>, seals: SealFlags) -> io::Resul target_os = "espidf", target_os = "fuchsia", target_os = "redox", + target_os = "vita", target_os = "wasi" )))] #[inline] @@ -1234,8 +1297,8 @@ pub(crate) fn seek(fd: BorrowedFd<'_>, pos: SeekFrom) -> io::Result<u64> { SeekFrom::Hole(offset) => (c::SEEK_HOLE, offset), }; - // ESP-IDF doesn't support 64-bit offsets. - #[cfg(target_os = "espidf")] + // ESP-IDF and Vita don't support 64-bit offsets. + #[cfg(any(target_os = "espidf", target_os = "vita"))] let offset: i32 = offset.try_into().map_err(|_| io::Errno::OVERFLOW)?; let offset = unsafe { ret_off_t(c::lseek(borrowed_fd(fd), offset, whence))? }; @@ -1302,7 +1365,12 @@ pub(crate) fn fchown(fd: BorrowedFd<'_>, owner: Option<Uid>, group: Option<Gid>) } } -#[cfg(not(any(target_os = "espidf", target_os = "solaris", target_os = "wasi")))] +#[cfg(not(any( + target_os = "espidf", + target_os = "solaris", + target_os = "vita", + target_os = "wasi" +)))] pub(crate) fn flock(fd: BorrowedFd<'_>, operation: FlockOperation) -> io::Result<()> { unsafe { ret(c::flock(borrowed_fd(fd), operation as c::c_int)) } } @@ -1324,7 +1392,12 @@ pub(crate) fn syncfs(fd: BorrowedFd<'_>) -> io::Result<()> { unsafe { ret(syncfs(borrowed_fd(fd))) } } -#[cfg(not(any(target_os = "espidf", target_os = "redox", target_os = "wasi")))] +#[cfg(not(any( + target_os = "espidf", + target_os = "redox", + target_os = "vita", + target_os = "wasi" +)))] pub(crate) fn sync() { unsafe { c::sync() } } @@ -1392,6 +1465,7 @@ fn fstat_old(fd: BorrowedFd<'_>) -> io::Result<Stat> { target_os = "netbsd", target_os = "nto", target_os = "redox", + target_os = "vita", target_os = "wasi", )))] pub(crate) fn fstatfs(fd: BorrowedFd<'_>) -> io::Result<StatFs> { @@ -1431,7 +1505,7 @@ fn libc_statvfs_to_statvfs(from: c::statvfs) -> StatVfs { } } -#[cfg(not(target_os = "espidf"))] +#[cfg(not(any(target_os = "espidf", target_os = "vita")))] pub(crate) fn futimens(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> { // Old 32-bit version: libc has `futimens` but it is not y2038 safe by // default. But there may be a `__futimens64` we can use. @@ -1507,7 +1581,11 @@ fn futimens_old(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> { .tv_sec .try_into() .map_err(|_| io::Errno::OVERFLOW)?, - tv_nsec: times.last_access.tv_nsec, + tv_nsec: times + .last_access + .tv_nsec + .try_into() + .map_err(|_| io::Errno::OVERFLOW)?, }, c::timespec { tv_sec: times @@ -1515,7 +1593,11 @@ fn futimens_old(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> { .tv_sec .try_into() .map_err(|_| io::Errno::OVERFLOW)?, - tv_nsec: times.last_modification.tv_nsec, + tv_nsec: times + .last_modification + .tv_nsec + .try_into() + .map_err(|_| io::Errno::OVERFLOW)?, }, ]; @@ -1531,6 +1613,7 @@ fn futimens_old(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()> { target_os = "espidf", target_os = "nto", target_os = "redox", + target_os = "vita", )))] pub(crate) fn fallocate( fd: BorrowedFd<'_>, @@ -1557,7 +1640,8 @@ pub(crate) fn fallocate( assert!(mode.is_empty()); let err = unsafe { c::posix_fallocate(borrowed_fd(fd), offset, len) }; - // `posix_fallocate` returns its error status rather than using `errno`. + // `posix_fallocate` returns its error status rather than using + // `errno`. if err == 0 { Ok(()) } else { @@ -1607,6 +1691,7 @@ pub(crate) fn fsync(fd: BorrowedFd<'_>) -> io::Result<()> { target_os = "espidf", target_os = "haiku", target_os = "redox", + target_os = "vita", )))] pub(crate) fn fdatasync(fd: BorrowedFd<'_>) -> io::Result<()> { unsafe { ret(c::fdatasync(borrowed_fd(fd))) } |