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bcachefs: bch2_acl_to_text()

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We can now print out acls from bch2_xattr_to_text(), when the xattr
contains an acl.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-09-08 18:14:08 -04:00
parent 197763a70b
commit a9a7bbab14
4 changed files with 72 additions and 9 deletions
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2
fs/bcachefs/Makefile
View File

@ -2,6 +2,7 @@
obj-$(CONFIG_BCACHEFS_FS) += bcachefs.o
bcachefs-y := \
acl.o \
alloc_background.o \
alloc_foreground.o \
backpointers.o \
@ -81,5 +82,4 @@ bcachefs-y := \
varint.o \
xattr.o
bcachefs-$(CONFIG_BCACHEFS_POSIX_ACL) += acl.o
obj-$(CONFIG_MEAN_AND_VARIANCE_UNIT_TEST) += mean_and_variance_test.o

65
fs/bcachefs/acl.c
View File

@ -1,18 +1,71 @@
// SPDX-License-Identifier: GPL-2.0
#ifdef CONFIG_BCACHEFS_POSIX_ACL
#include "bcachefs.h"
#include <linux/fs.h>
#include "acl.h"
#include "xattr.h"
#include <linux/posix_acl.h>
static const char * const acl_types[] = {
[ACL_USER_OBJ] = "user_obj",
[ACL_USER] = "user",
[ACL_GROUP_OBJ] = "group_obj",
[ACL_GROUP] = "group",
[ACL_MASK] = "mask",
[ACL_OTHER] = "other",
NULL,
};
void bch2_acl_to_text(struct printbuf *out, const void *value, size_t size)
{
const void *p, *end = value + size;
if (!value ||
size < sizeof(bch_acl_header) ||
((bch_acl_header *)value)->a_version != cpu_to_le32(BCH_ACL_VERSION))
return;
p = value + sizeof(bch_acl_header);
while (p < end) {
const bch_acl_entry *in = p;
unsigned tag = le16_to_cpu(in->e_tag);
prt_str(out, acl_types[tag]);
switch (tag) {
case ACL_USER_OBJ:
case ACL_GROUP_OBJ:
case ACL_MASK:
case ACL_OTHER:
p += sizeof(bch_acl_entry_short);
break;
case ACL_USER:
prt_printf(out, " uid %u", le32_to_cpu(in->e_id));
p += sizeof(bch_acl_entry);
break;
case ACL_GROUP:
prt_printf(out, " gid %u", le32_to_cpu(in->e_id));
p += sizeof(bch_acl_entry);
break;
}
prt_printf(out, " %o", le16_to_cpu(in->e_perm));
if (p != end)
prt_char(out, ' ');
}
}
#ifdef CONFIG_BCACHEFS_POSIX_ACL
#include "fs.h"
#include <linux/fs.h>
#include <linux/posix_acl_xattr.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include "acl.h"
#include "fs.h"
#include "xattr.h"
static inline size_t bch2_acl_size(unsigned nr_short, unsigned nr_long)
{
return sizeof(bch_acl_header) +

6
fs/bcachefs/acl.h
View File

@ -7,8 +7,6 @@ struct bch_hash_info;
struct bch_inode_info;
struct posix_acl;
#ifdef CONFIG_BCACHEFS_POSIX_ACL
#define BCH_ACL_VERSION 0x0001
typedef struct {
@ -26,6 +24,10 @@ typedef struct {
__le32 a_version;
} bch_acl_header;
void bch2_acl_to_text(struct printbuf *, const void *, size_t);
#ifdef CONFIG_BCACHEFS_POSIX_ACL
struct posix_acl *bch2_get_acl(struct mnt_idmap *, struct dentry *, int);
int bch2_set_acl_trans(struct btree_trans *, subvol_inum,

8
fs/bcachefs/xattr.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "acl.h"
#include "bkey_methods.h"
#include "btree_update.h"
#include "extents.h"
@ -130,6 +131,13 @@ void bch2_xattr_to_text(struct printbuf *out, struct bch_fs *c,
xattr.v->x_name,
le16_to_cpu(xattr.v->x_val_len),
(char *) xattr_val(xattr.v));
if (xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS ||
xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT) {
prt_char(out, ' ');
bch2_acl_to_text(out, xattr_val(xattr.v),
le16_to_cpu(xattr.v->x_val_len));
}
}
static int bch2_xattr_get_trans(struct btree_trans *trans, struct bch_inode_info *inode,