unix: add bindings for setattrlist() on macOS

The setattrlist() function can be used to mutate the attributes of files through a single call. For example, one can perform a chmod(), chown(), chflags(), [...] all at once. This change also adds bindings for the UF_* and SF_* flags that are accepted by chflags(). This makes it possible to use setattrlist() to perform the equivalent of lchflags(), for which we currently have no binding.
golang · Apr 3, 2023 · 45dd9d4 · 45dd9d4
1 parent 94933fc
commit 45dd9d4
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Showing 13 changed files with 125 additions and 1 deletion.
diff --git a/unix/darwin_amd64_test.go b/unix/darwin_amd64_test.go
diff --git a/unix/darwin_arm64_test.go b/unix/darwin_arm64_test.go
diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
@@ -66,6 +66,7 @@ includes_Darwin='
 #include <sys/ptrace.h>
 #include <sys/select.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/un.h>
 #include <sys/sockio.h>
 #include <sys/sys_domain.h>
@@ -521,6 +522,7 @@ ccflags="$@"
 		$2 ~ /^NFC_(GENL|PROTO|COMM|RF|SE|DIRECTION|LLCP|SOCKPROTO)_/ ||
 		$2 ~ /^NFC_.*_(MAX)?SIZE$/ ||
 		$2 ~ /^RAW_PAYLOAD_/ ||
+		$2 ~ /^[US]F_/ ||
 		$2 ~ /^TP_STATUS_/ ||
 		$2 ~ /^FALLOC_/ ||
 		$2 ~ /^ICMPV?6?_(FILTER|SEC)/ ||

diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go
@@ -613,6 +613,7 @@ func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
 //sys	Rmdir(path string) (err error)
 //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
 //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
+//sys	Setattrlist(path string, attrlist *Attrlist, attrBuf []byte, options int) (err error)
 //sys	Setegid(egid int) (err error)
 //sysnb	Seteuid(euid int) (err error)
 //sysnb	Setgid(gid int) (err error)
@@ -675,7 +676,6 @@ func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
 // Kqueue_from_portset_np
 // Kqueue_portset
 // Getattrlist
-// Setattrlist
 // Getdirentriesattr
 // Searchfs
 // Delete

diff --git a/unix/types_darwin.go b/unix/types_darwin.go
@@ -140,6 +140,8 @@ type Fsid C.struct_fsid
 
 type Dirent C.struct_dirent
 
+type Attrlist C.struct_attrlist
+
 // File system limits
 
 const (

diff --git a/unix/zerrors_darwin_amd64.go b/unix/zerrors_darwin_amd64.go
diff --git a/unix/zerrors_darwin_arm64.go b/unix/zerrors_darwin_arm64.go
diff --git a/unix/zsyscall_darwin_amd64.go b/unix/zsyscall_darwin_amd64.go
diff --git a/unix/zsyscall_darwin_amd64.s b/unix/zsyscall_darwin_amd64.s
@@ -705,6 +705,11 @@ TEXT libc_select_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_select_trampoline_addr(SB), RODATA, $8
 DATA	·libc_select_trampoline_addr(SB)/8, $libc_select_trampoline<>(SB)
 
+TEXT libc_setattrlist_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_setattrlist(SB)
+GLOBL	·libc_setattrlist_trampoline_addr(SB), RODATA, $8
+DATA	·libc_setattrlist_trampoline_addr(SB)/8, $libc_setattrlist_trampoline<>(SB)
+
 TEXT libc_setegid_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_setegid(SB)
 

diff --git a/unix/zsyscall_darwin_arm64.go b/unix/zsyscall_darwin_arm64.go
diff --git a/unix/zsyscall_darwin_arm64.s b/unix/zsyscall_darwin_arm64.s
@@ -705,6 +705,11 @@ TEXT libc_select_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_select_trampoline_addr(SB), RODATA, $8
 DATA	·libc_select_trampoline_addr(SB)/8, $libc_select_trampoline<>(SB)
 
+TEXT libc_setattrlist_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_setattrlist(SB)
+GLOBL	·libc_setattrlist_trampoline_addr(SB), RODATA, $8
+DATA	·libc_setattrlist_trampoline_addr(SB)/8, $libc_setattrlist_trampoline<>(SB)
+
 TEXT libc_setegid_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_setegid(SB)
 

diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go
diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go