diff mbox series

[v2,31/37] bsd-user: Add link and list extattr functions to os-extattr.h

Message ID 20260518-misc-2026q2-v2-31-6c16fe448301@bsdimp.com
State New
Headers show
Series bsd-user: Upstream most of the remaining system calls | expand

Commit Message

Warner Losh May 18, 2026, 9:27 p.m. UTC 
Add extattr_get_link, extattr_set_link, extattr_delete_link,
extattr_list_fd, extattr_list_file, and extattr_list_link.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Assisted-by: Claude Opus 4.6 (1M context)
---
 bsd-user/freebsd/os-extattr.h | 172 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 172 insertions(+)
diff mbox series

Patch

diff --git a/bsd-user/freebsd/os-extattr.h b/bsd-user/freebsd/os-extattr.h
index f1dfa344cf..788e40ef30 100644
--- a/bsd-user/freebsd/os-extattr.h
+++ b/bsd-user/freebsd/os-extattr.h
@@ -204,5 +204,177 @@  static inline abi_long do_freebsd_extattr_delete_fd(abi_long arg1,
     return ret;
 }
 
+/* extattr_get_link(2) */
+static inline abi_long do_freebsd_extattr_get_link(abi_ulong arg1,
+                                                   abi_long arg2,
+                                                   abi_ulong arg3,
+                                                   abi_ulong arg4,
+                                                   abi_ulong arg5)
+{
+    abi_long ret;
+    void  *p, *a, *d;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    a = lock_user_string(arg3);
+    if (a == NULL) {
+        unlock_user(p, arg1, 0);
+        return -TARGET_EFAULT;
+    }
+    if (arg4 && arg5 > 0) {
+        d = lock_user(VERIFY_WRITE, arg4, arg5, 0);
+        if (d == NULL) {
+            unlock_user(a, arg3, 0);
+            unlock_user(p, arg1, 0);
+            return -TARGET_EFAULT;
+        }
+        ret = get_errno(extattr_get_link(path(p), arg2, a, d, arg5));
+        unlock_user(d, arg4, arg5);
+    } else {
+        ret = get_errno(extattr_get_link(path(p), arg2, a, NULL, arg5));
+    }
+    unlock_user(a, arg3, 0);
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/* extattr_set_link(2) */
+static inline abi_long do_freebsd_extattr_set_link(abi_ulong arg1,
+                                                   abi_long arg2,
+                                                   abi_ulong arg3,
+                                                   abi_ulong arg4,
+                                                   abi_ulong arg5)
+{
+    abi_long ret;
+    void  *p, *a, *d;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    a = lock_user_string(arg3);
+    if (a == NULL) {
+        unlock_user(p, arg1, 0);
+        return -TARGET_EFAULT;
+    }
+    d = lock_user(VERIFY_READ, arg4, arg5, 1);
+    if (d == NULL) {
+        unlock_user(a, arg3, 0);
+        unlock_user(p, arg1, 0);
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(extattr_set_link(path(p), arg2, a, d, arg5));
+    unlock_user(d, arg4, arg5);
+    unlock_user(a, arg3, 0);
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/* extattr_delete_link(2) */
+static inline abi_long do_freebsd_extattr_delete_link(abi_ulong arg1,
+                                                      abi_long arg2,
+                                                      abi_ulong arg3)
+{
+    abi_long ret;
+    void *p, *a;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    a = lock_user_string(arg3);
+    if (a == NULL) {
+        unlock_user(p, arg1, 0);
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(extattr_delete_link(path(p), arg2, a));
+    unlock_user(a, arg3, 0);
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/* extattr_list_fd(2) */
+static inline abi_long do_freebsd_extattr_list_fd(
+    abi_long arg1, abi_long arg2, abi_ulong arg3, abi_ulong arg4)
+{
+    abi_long ret;
+    void *d;
+
+    if (arg3 && arg4 > 0) {
+        d = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+        if (d == NULL) {
+            return -TARGET_EFAULT;
+        }
+        ret = get_errno(extattr_list_fd(arg1, arg2, d, arg4));
+        unlock_user(d, arg3, arg4);
+    } else {
+        ret = get_errno(extattr_list_fd(arg1, arg2, NULL, arg4));
+    }
+    return ret;
+}
+
+/* extattr_list_file(2) */
+static inline abi_long do_freebsd_extattr_list_file(
+    abi_long arg1, abi_long arg2, abi_ulong arg3, abi_ulong arg4)
+{
+    abi_long ret;
+    void *p, *d;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    if (arg3 && arg4 > 0) {
+        d = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+        if (d == NULL) {
+            unlock_user(p, arg1, 0);
+            return -TARGET_EFAULT;
+        }
+        ret = get_errno(extattr_list_file(path(p), arg2, d, arg4));
+        unlock_user(d, arg3, arg4);
+    } else {
+        ret = get_errno(extattr_list_file(path(p), arg2, NULL, arg4));
+    }
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/* extattr_list_link(2) */
+static inline abi_long do_freebsd_extattr_list_link(
+    abi_long arg1, abi_long arg2, abi_ulong arg3, abi_ulong arg4)
+{
+    abi_long ret;
+    void *p, *d;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    if (arg3 && arg4 > 0) {
+        d = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+        if (d == NULL) {
+            unlock_user(p, arg1, 0);
+            return -TARGET_EFAULT;
+        }
+        ret = get_errno(extattr_list_link(path(p), arg2, d, arg4));
+        unlock_user(d, arg3, arg4);
+    } else {
+        ret = get_errno(extattr_list_link(path(p), arg2, NULL, arg4));
+    }
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/*
+ *  Access Control Lists
+ */
+
 
 #endif /* FREEBSD_OS_EXTATTR_H */