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package darwin
import "core:c"
import "base:runtime"
// IMPORTANT NOTE: direct syscall usage is not allowed by Apple's review process of apps and should
// be entirely avoided in the builtin Odin collections, these are here for users if they don't
// care about the Apple review process.
// this package uses the sys prefix for the proc names to indicate that these aren't native syscalls but directly call such
sys_write_string :: proc (fd: c.int, message: string) -> bool {
return syscall_write(fd, raw_data(message), cast(u64)len(message))
}
Offset_From :: enum c.int {
SEEK_SET = 0, // the offset is set to offset bytes.
SEEK_CUR = 1, // the offset is set to its current location plus offset bytes.
SEEK_END = 2, // the offset is set to the size of the file plus offset bytes.
SEEK_HOLE = 3, // the offset is set to the start of the next hole greater than or equal to the supplied offset.
SEEK_DATA = 4, // the offset is set to the start of the next non-hole file region greater than or equal to the supplied offset.
}
Open_Flags_Enum :: enum u8 {
RDONLY, /* open for reading only */
WRONLY, /* open for writing only */
RDWR, /* open for reading and writing */
NONBLOCK, /* no delay */
APPEND, /* set append mode */
CREAT, /* create if nonexistant */
TRUNC, /* truncate to zero length */
EXCL, /* error if already exists */
SHLOCK, /* open with shared file lock */
EXLOCK, /* open with exclusive file lock */
DIRECTORY, /* restrict open to only directories */
NOFOLLOW, /* don't follow symlinks */
SYMLINK, /* allow open of a symlink */
EVTONLY, /* descriptor requested for event notifications only */
CLOEXEC, /* causes the descriptor to be closed if you use any of the exec like functions */
NOFOLLOW_ANY, /* no symlinks allowed in path */
}
Open_Flags :: bit_set[Open_Flags_Enum; u16]
Permission_Enum :: enum u8 {
/* For owner */
PERMISSION_OWNER_READ, /* R for owner */
PERMISSION_OWNER_WRITE, /* W for owner */
PERMISSION_OWNER_EXECUTE, /* X for owner */
//IRWXU, /* RWX mask for owner */
/* For group */
PERMISSION_GROUP_READ, /* R for group */
PERMISSION_GROUP_WRITE, /* W for group */
PERMISSION_GROUP_EXECUTE, /* X for group */
//IRWXG, /* RWX mask for group */
/* For other */
PERMISSION_OTHER_READ, /* R for other */
PERMISSION_OTHER_WRITE, /* W for other */
PERMISSION_OTHER_EXECUTE, /* X for other */
//IRWXO, /* RWX mask for other */
/* Special */
PERMISSION_SET_USER_ON_EXECUTION, /* set user id on execution */
PERMISSION_SET_GROUP_ON_EXECUTION, /* set group id on execution */
/* ?? */
PERMISSION_ISVTX, /* save swapped text even after use */
}
Permission :: bit_set[Permission_Enum; u16]
PERMISSION_NONE_NONE :: Permission{}
PERMISSION_OWNER_ALL :: Permission{.PERMISSION_OWNER_READ, .PERMISSION_OWNER_WRITE, .PERMISSION_OWNER_EXECUTE}
PERMISSION_GROUP_ALL :: Permission{.PERMISSION_GROUP_READ, .PERMISSION_GROUP_WRITE, .PERMISSION_GROUP_EXECUTE}
PERMISSION_OTHER_ALL :: Permission{.PERMISSION_OTHER_READ, .PERMISSION_OTHER_WRITE, .PERMISSION_OTHER_EXECUTE}
PERMISSION_ALL_ALL :: PERMISSION_OWNER_ALL | PERMISSION_GROUP_ALL | PERMISSION_OTHER_ALL
_sys_permission_mode :: #force_inline proc (mode: Permission) -> u32 {
cflags: u32 = 0
cflags |= PERMISSION_MASK_IRUSR * u32(Permission.PERMISSION_OWNER_READ in mode)
cflags |= PERMISSION_MASK_IWUSR * u32(Permission.PERMISSION_OWNER_WRITE in mode)
cflags |= PERMISSION_MASK_IXUSR * u32(Permission.PERMISSION_OWNER_WRITE in mode)
cflags |= PERMISSION_MASK_IRGRP * u32(Permission.PERMISSION_GROUP_READ in mode)
cflags |= PERMISSION_MASK_IWGRP * u32(Permission.PERMISSION_GROUP_WRITE in mode)
cflags |= PERMISSION_MASK_IXGRP * u32(Permission.PERMISSION_GROUP_WRITE in mode)
cflags |= PERMISSION_MASK_IROTH * u32(Permission.PERMISSION_OTHER_READ in mode)
cflags |= PERMISSION_MASK_IWOTH * u32(Permission.PERMISSION_OTHER_WRITE in mode)
cflags |= PERMISSION_MASK_IXOTH * u32(Permission.PERMISSION_OTHER_WRITE in mode)
return cflags
}
_sys_open_mode :: #force_inline proc(mode: Open_Flags) -> u32 {
cflags : u32 = 0
cflags |= OPEN_FLAG_RDONLY * u32(Open_Flags.RDONLY in mode)
cflags |= OPEN_FLAG_WRONLY * u32(Open_Flags.WRONLY in mode)
cflags |= OPEN_FLAG_RDWR * u32(Open_Flags.RDWR in mode)
cflags |= OPEN_FLAG_NONBLOCK * u32(Open_Flags.NONBLOCK in mode)
cflags |= OPEN_FLAG_CREAT * u32(Open_Flags.CREAT in mode)
cflags |= OPEN_FLAG_APPEND * u32(Open_Flags.APPEND in mode)
cflags |= OPEN_FLAG_TRUNC * u32(Open_Flags.TRUNC in mode)
cflags |= OPEN_FLAG_EXCL * u32(Open_Flags.EXCL in mode)
cflags |= OPEN_FLAG_SHLOCK * u32(Open_Flags.SHLOCK in mode)
cflags |= OPEN_FLAG_EXLOCK * u32(Open_Flags.EXLOCK in mode)
cflags |= OPEN_FLAG_DIRECTORY * u32(Open_Flags.DIRECTORY in mode)
cflags |= OPEN_FLAG_NOFOLLOW * u32(Open_Flags.NOFOLLOW in mode)
cflags |= OPEN_FLAG_SYMLINK * u32(Open_Flags.SYMLINK in mode)
cflags |= OPEN_FLAG_EVTONLY * u32(Open_Flags.EVTONLY in mode)
cflags |= OPEN_FLAG_CLOEXEC * u32(Open_Flags.CLOEXEC in mode)
cflags |= OPEN_FLAG_NOFOLLOW_ANY * u32(Open_Flags.NOFOLLOW_ANY in mode)
return cflags
}
@(private)
clone_to_cstring :: proc(s: string, allocator: runtime.Allocator, loc := #caller_location) -> cstring {
c := make([]byte, len(s)+1, allocator, loc)
copy(c, s)
c[len(s)] = 0
return cstring(&c[0])
}
sys_open :: proc(path: string, oflag: Open_Flags, mode: Permission) -> (c.int, bool) {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cmode: u32 = 0
cflags: u32 = 0
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cflags = _sys_permission_mode(mode)
cmode = _sys_open_mode(oflag)
result := syscall_open(cpath, cmode, cflags)
state := result != -1
if state && cflags != 0 {
state = (syscall_fchmod(result, cflags) != -1)
}
return result * cast(c.int)state, state
}
sys_mkdir :: proc(path: string, mode: Permission) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cflags := _sys_permission_mode(mode)
return syscall_mkdir(cpath, cflags) != -1
}
sys_mkdir_at :: proc(fd: c.int, path: string, mode: Permission) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cflags := _sys_permission_mode(mode)
return syscall_mkdir_at(fd, cpath, cflags) != -1
}
sys_rmdir :: proc(path: string, mode: Permission) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cflags := _sys_permission_mode(mode)
return syscall_rmdir(cpath, cflags) != -1
}
sys_rename :: proc(path: string, new_path: string) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cnpath: cstring = clone_to_cstring(new_path, context.temp_allocator)
return syscall_rename(cpath, cnpath) != -1
}
sys_rename_at :: proc(fd: c.int, path: string, to_fd: c.int, new_path: string) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cnpath: cstring = clone_to_cstring(new_path, context.temp_allocator)
return syscall_rename_at(fd, cpath, to_fd, cnpath) != -1
}
sys_lseek :: proc(fd: c.int, offset: i64, whence: Offset_From) -> i64 {
return syscall_lseek(fd, offset, cast(c.int)whence)
}
sys_chmod :: proc(path: string, mode: Permission) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
cmode := _sys_permission_mode(mode)
return syscall_chmod(cpath, cmode) != -1
}
sys_lstat :: proc(path: string, status: ^stat) -> bool {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cpath: cstring = clone_to_cstring(path, context.temp_allocator)
return syscall_lstat(cpath, status) != -1
}
sys_shm_open :: proc(name: string, oflag: Open_Flags, mode: Permission) -> (c.int, bool) {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
cmode: u32 = 0
cflags: u32 = 0
cname: cstring = clone_to_cstring(name, context.temp_allocator)
cflags = _sys_permission_mode(mode)
cmode = _sys_open_mode(oflag)
result := syscall_shm_open(cname, cmode, cflags)
state := result != -1
// NOTE(beau): Presently fstat doesn't report any changed permissions
// on the file descriptor even with this fchmod (which fails with a
// non-zero return). I can also reproduce this with the syscalls in c
// so I suspect it's not odin's bug. I've left the fchmod in case the
// underlying issue is fixed.
if state && cflags != 0 {
state = (syscall_fchmod(result, cflags) != -1)
}
return result * cast(c.int)state, state
}
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