Re: [PATCH v18 18/22] richacl: xattr mapping functions
From: Christoph Hellwig <hidden>
Date: 2016-03-11 14:17:01
Also in:
linux-api, linux-cifs, linux-fsdevel, linux-nfs, linux-xfs, lkml
+#include <linux/richacl_xattr.h>
+
+MODULE_LICENSE("GPL");what's the point given that the code isn't even modolar?
quoted hunk ↗ jump to hunk
+static void +fix_xattr_from_user(const char *kname, void *kvalue, size_t size) +{ + if (strncmp(kname, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return; + kname += XATTR_SYSTEM_PREFIX_LEN; + if (!strcmp(kname, XATTR_POSIX_ACL_ACCESS) || + !strcmp(kname, XATTR_POSIX_ACL_DEFAULT)) + posix_acl_fix_xattr_from_user(kvalue, size); +} /* * Extended attribute SET operations@@ -329,9 +339,7 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value, error = -EFAULT; goto out; } - if ((strcmp(kname, XATTR_NAME_POSIX_ACL_ACCESS) == 0) || - (strcmp(kname, XATTR_NAME_POSIX_ACL_DEFAULT) == 0)) - posix_acl_fix_xattr_from_user(kvalue, size); + fix_xattr_from_user(kname, kvalue, size); } error = vfs_setxattr(d, kname, kvalue, size, flags);@@ -396,6 +404,17 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name, return error; } +static void +fix_xattr_to_user(const char *kname, void *kvalue, size_t size) +{ + if (strncmp(kname, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return; + kname += XATTR_SYSTEM_PREFIX_LEN; + if (!strcmp(kname, XATTR_POSIX_ACL_ACCESS) || + !strcmp(kname, XATTR_POSIX_ACL_DEFAULT)) + posix_acl_fix_xattr_to_user(kvalue, size); +} + /* * Extended attribute GET operations */@@ -426,9 +445,7 @@ getxattr(struct dentry *d, const char __user *name, void __user *value, error = vfs_getxattr(d, kname, kvalue, size); if (error > 0) { - if ((strcmp(kname, XATTR_NAME_POSIX_ACL_ACCESS) == 0) || - (strcmp(kname, XATTR_NAME_POSIX_ACL_DEFAULT) == 0)) - posix_acl_fix_xattr_to_user(kvalue, size); + fix_xattr_to_user(kname, kvalue, size);
I don't see how this is related to the rest of the patch.
quoted hunk ↗ jump to hunk
+++ b/include/linux/richacl_xattr.h
What's the point in splitting this from the richacl.h header? Same for the uapi versions.
+struct richacl_xattr {
+ unsigned char a_version;
+ unsigned char a_flags;Explicit __u8 for uapi headers, please.