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Diffstat (limited to 'fs/hfsplus/ioctl.c')
-rw-r--r--fs/hfsplus/ioctl.c153
1 files changed, 84 insertions, 69 deletions
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index ac405f099026..5b4667e08ef7 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -17,83 +17,98 @@
17#include <linux/mount.h> 17#include <linux/mount.h>
18#include <linux/sched.h> 18#include <linux/sched.h>
19#include <linux/xattr.h> 19#include <linux/xattr.h>
20#include <linux/smp_lock.h>
21#include <asm/uaccess.h> 20#include <asm/uaccess.h>
22#include "hfsplus_fs.h" 21#include "hfsplus_fs.h"
23 22
24long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 23static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
25{ 24{
26 struct inode *inode = filp->f_path.dentry->d_inode; 25 struct inode *inode = file->f_path.dentry->d_inode;
26 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
27 unsigned int flags = 0;
28
29 if (inode->i_flags & S_IMMUTABLE)
30 flags |= FS_IMMUTABLE_FL;
31 if (inode->i_flags |= S_APPEND)
32 flags |= FS_APPEND_FL;
33 if (hip->userflags & HFSPLUS_FLG_NODUMP)
34 flags |= FS_NODUMP_FL;
35
36 return put_user(flags, user_flags);
37}
38
39static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
40{
41 struct inode *inode = file->f_path.dentry->d_inode;
42 struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
27 unsigned int flags; 43 unsigned int flags;
44 int err = 0;
28 45
29 lock_kernel(); 46 err = mnt_want_write(file->f_path.mnt);
30 switch (cmd) { 47 if (err)
31 case HFSPLUS_IOC_EXT2_GETFLAGS: 48 goto out;
32 flags = 0;
33 if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
34 flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
35 if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
36 flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
37 if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
38 flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
39 return put_user(flags, (int __user *)arg);
40 case HFSPLUS_IOC_EXT2_SETFLAGS: {
41 int err = 0;
42 err = mnt_want_write(filp->f_path.mnt);
43 if (err) {
44 unlock_kernel();
45 return err;
46 }
47 49
48 if (!is_owner_or_cap(inode)) { 50 if (!is_owner_or_cap(inode)) {
49 err = -EACCES; 51 err = -EACCES;
50 goto setflags_out; 52 goto out_drop_write;
51 } 53 }
52 if (get_user(flags, (int __user *)arg)) {
53 err = -EFAULT;
54 goto setflags_out;
55 }
56 if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
57 HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
58 if (!capable(CAP_LINUX_IMMUTABLE)) {
59 err = -EPERM;
60 goto setflags_out;
61 }
62 }
63 54
64 /* don't silently ignore unsupported ext2 flags */ 55 if (get_user(flags, user_flags)) {
65 if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) { 56 err = -EFAULT;
66 err = -EOPNOTSUPP; 57 goto out_drop_write;
67 goto setflags_out; 58 }
68 } 59
69 if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */ 60 mutex_lock(&inode->i_mutex);
70 inode->i_flags |= S_IMMUTABLE; 61
71 HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE; 62 if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) ||
72 } else { 63 inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
73 inode->i_flags &= ~S_IMMUTABLE; 64 if (!capable(CAP_LINUX_IMMUTABLE)) {
74 HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE; 65 err = -EPERM;
75 } 66 goto out_unlock_inode;
76 if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
77 inode->i_flags |= S_APPEND;
78 HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
79 } else {
80 inode->i_flags &= ~S_APPEND;
81 HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
82 } 67 }
83 if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
84 HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
85 else
86 HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
87
88 inode->i_ctime = CURRENT_TIME_SEC;
89 mark_inode_dirty(inode);
90setflags_out:
91 mnt_drop_write(filp->f_path.mnt);
92 unlock_kernel();
93 return err;
94 } 68 }
69
70 /* don't silently ignore unsupported ext2 flags */
71 if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
72 err = -EOPNOTSUPP;
73 goto out_unlock_inode;
74 }
75
76 if (flags & FS_IMMUTABLE_FL)
77 inode->i_flags |= S_IMMUTABLE;
78 else
79 inode->i_flags &= ~S_IMMUTABLE;
80
81 if (flags & FS_APPEND_FL)
82 inode->i_flags |= S_APPEND;
83 else
84 inode->i_flags &= ~S_APPEND;
85
86 if (flags & FS_NODUMP_FL)
87 hip->userflags |= HFSPLUS_FLG_NODUMP;
88 else
89 hip->userflags &= ~HFSPLUS_FLG_NODUMP;
90
91 inode->i_ctime = CURRENT_TIME_SEC;
92 mark_inode_dirty(inode);
93
94out_unlock_inode:
95 mutex_lock(&inode->i_mutex);
96out_drop_write:
97 mnt_drop_write(file->f_path.mnt);
98out:
99 return err;
100}
101
102long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
103{
104 void __user *argp = (void __user *)arg;
105
106 switch (cmd) {
107 case HFSPLUS_IOC_EXT2_GETFLAGS:
108 return hfsplus_ioctl_getflags(file, argp);
109 case HFSPLUS_IOC_EXT2_SETFLAGS:
110 return hfsplus_ioctl_setflags(file, argp);
95 default: 111 default:
96 unlock_kernel();
97 return -ENOTTY; 112 return -ENOTTY;
98 } 113 }
99} 114}
@@ -110,7 +125,7 @@ int hfsplus_setxattr(struct dentry *dentry, const char *name,
110 if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode)) 125 if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
111 return -EOPNOTSUPP; 126 return -EOPNOTSUPP;
112 127
113 res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); 128 res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
114 if (res) 129 if (res)
115 return res; 130 return res;
116 res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); 131 res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
@@ -153,7 +168,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
153 return -EOPNOTSUPP; 168 return -EOPNOTSUPP;
154 169
155 if (size) { 170 if (size) {
156 res = hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); 171 res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
157 if (res) 172 if (res)
158 return res; 173 return res;
159 res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); 174 res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
@@ -177,7 +192,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
177 } else 192 } else
178 res = size ? -ERANGE : 4; 193 res = size ? -ERANGE : 4;
179 } else 194 } else
180 res = -ENODATA; 195 res = -EOPNOTSUPP;
181out: 196out:
182 if (size) 197 if (size)
183 hfs_find_exit(&fd); 198 hfs_find_exit(&fd);
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-03 03:29:22 -0500