1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* 1 /*
3 * Inode operations for Coda filesystem 2 * Inode operations for Coda filesystem
4 * Original version: (C) 1996 P. Braam and M. 3 * Original version: (C) 1996 P. Braam and M. Callahan
5 * Rewritten for Linux 2.1. (C) 1997 Carnegie 4 * Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University
6 * 5 *
7 * Carnegie Mellon encourages users to contrib 6 * Carnegie Mellon encourages users to contribute improvements to
8 * the Coda project. Contact Peter Braam (coda 7 * the Coda project. Contact Peter Braam (coda@cs.cmu.edu).
9 */ 8 */
10 9
11 #include <linux/types.h> 10 #include <linux/types.h>
12 #include <linux/kernel.h> 11 #include <linux/kernel.h>
13 #include <linux/time.h> 12 #include <linux/time.h>
14 #include <linux/fs.h> 13 #include <linux/fs.h>
15 #include <linux/stat.h> 14 #include <linux/stat.h>
16 #include <linux/errno.h> 15 #include <linux/errno.h>
17 #include <linux/uaccess.h> 16 #include <linux/uaccess.h>
18 #include <linux/string.h> 17 #include <linux/string.h>
19 18
20 #include <linux/coda.h> 19 #include <linux/coda.h>
21 #include "coda_psdev.h" !! 20 #include <linux/coda_psdev.h>
22 #include "coda_linux.h" 21 #include "coda_linux.h"
23 22
24 /* initialize the debugging variables */ 23 /* initialize the debugging variables */
25 int coda_fake_statfs; 24 int coda_fake_statfs;
26 25
27 /* print a fid */ 26 /* print a fid */
28 char * coda_f2s(struct CodaFid *f) 27 char * coda_f2s(struct CodaFid *f)
29 { 28 {
30 static char s[60]; 29 static char s[60];
31 30
32 sprintf(s, "(%08x.%08x.%08x.%08x)", f- 31 sprintf(s, "(%08x.%08x.%08x.%08x)", f->opaque[0], f->opaque[1], f->opaque[2], f->opaque[3]);
33 32
34 return s; 33 return s;
35 } 34 }
36 35
37 /* recognize special .CONTROL name */ 36 /* recognize special .CONTROL name */
38 int coda_iscontrol(const char *name, size_t le 37 int coda_iscontrol(const char *name, size_t length)
39 { 38 {
40 return ((CODA_CONTROLLEN == length) && 39 return ((CODA_CONTROLLEN == length) &&
41 (strncmp(name, CODA_CONTROL, C 40 (strncmp(name, CODA_CONTROL, CODA_CONTROLLEN) == 0));
42 } 41 }
43 42
44 unsigned short coda_flags_to_cflags(unsigned s 43 unsigned short coda_flags_to_cflags(unsigned short flags)
45 { 44 {
46 unsigned short coda_flags = 0; 45 unsigned short coda_flags = 0;
47 46
48 if ((flags & O_ACCMODE) == O_RDONLY) 47 if ((flags & O_ACCMODE) == O_RDONLY)
49 coda_flags |= C_O_READ; 48 coda_flags |= C_O_READ;
50 49
51 if ((flags & O_ACCMODE) == O_RDWR) 50 if ((flags & O_ACCMODE) == O_RDWR)
52 coda_flags |= C_O_READ | C_O_W 51 coda_flags |= C_O_READ | C_O_WRITE;
53 52
54 if ((flags & O_ACCMODE) == O_WRONLY) 53 if ((flags & O_ACCMODE) == O_WRONLY)
55 coda_flags |= C_O_WRITE; 54 coda_flags |= C_O_WRITE;
56 55
57 if (flags & O_TRUNC) 56 if (flags & O_TRUNC)
58 coda_flags |= C_O_TRUNC; 57 coda_flags |= C_O_TRUNC;
59 58
60 if (flags & O_CREAT) 59 if (flags & O_CREAT)
61 coda_flags |= C_O_CREAT; 60 coda_flags |= C_O_CREAT;
62 61
63 if (flags & O_EXCL) 62 if (flags & O_EXCL)
64 coda_flags |= C_O_EXCL; 63 coda_flags |= C_O_EXCL;
65 64
66 return coda_flags; 65 return coda_flags;
67 } 66 }
68 67
69 static struct timespec64 coda_to_timespec64(st <<
70 { <<
71 struct timespec64 ts64 = { <<
72 .tv_sec = ts.tv_sec, <<
73 .tv_nsec = ts.tv_nsec, <<
74 }; <<
75 <<
76 return ts64; <<
77 } <<
78 <<
79 static struct coda_timespec timespec64_to_coda <<
80 { <<
81 struct coda_timespec ts = { <<
82 .tv_sec = ts64.tv_sec, <<
83 .tv_nsec = ts64.tv_nsec, <<
84 }; <<
85 <<
86 return ts; <<
87 } <<
88 68
89 /* utility functions below */ 69 /* utility functions below */
90 umode_t coda_inode_type(struct coda_vattr *att <<
91 { <<
92 switch (attr->va_type) { <<
93 case C_VREG: <<
94 return S_IFREG; <<
95 case C_VDIR: <<
96 return S_IFDIR; <<
97 case C_VLNK: <<
98 return S_IFLNK; <<
99 case C_VNON: <<
100 default: <<
101 return 0; <<
102 } <<
103 } <<
104 <<
105 void coda_vattr_to_iattr(struct inode *inode, 70 void coda_vattr_to_iattr(struct inode *inode, struct coda_vattr *attr)
106 { 71 {
107 /* inode's i_flags, i_ino are set by i !! 72 int inode_type;
108 * XXX: is this all we need ?? !! 73 /* inode's i_flags, i_ino are set by iget
109 */ !! 74 XXX: is this all we need ??
110 umode_t inode_type = coda_inode_type(a !! 75 */
>> 76 switch (attr->va_type) {
>> 77 case C_VNON:
>> 78 inode_type = 0;
>> 79 break;
>> 80 case C_VREG:
>> 81 inode_type = S_IFREG;
>> 82 break;
>> 83 case C_VDIR:
>> 84 inode_type = S_IFDIR;
>> 85 break;
>> 86 case C_VLNK:
>> 87 inode_type = S_IFLNK;
>> 88 break;
>> 89 default:
>> 90 inode_type = 0;
>> 91 }
111 inode->i_mode |= inode_type; 92 inode->i_mode |= inode_type;
112 93
113 if (attr->va_mode != (u_short) -1) 94 if (attr->va_mode != (u_short) -1)
114 inode->i_mode = attr->va_mode 95 inode->i_mode = attr->va_mode | inode_type;
115 if (attr->va_uid != -1) 96 if (attr->va_uid != -1)
116 inode->i_uid = make_kuid(&init 97 inode->i_uid = make_kuid(&init_user_ns, (uid_t) attr->va_uid);
117 if (attr->va_gid != -1) 98 if (attr->va_gid != -1)
118 inode->i_gid = make_kgid(&init 99 inode->i_gid = make_kgid(&init_user_ns, (gid_t) attr->va_gid);
119 if (attr->va_nlink != -1) 100 if (attr->va_nlink != -1)
120 set_nlink(inode, attr->va_nlin 101 set_nlink(inode, attr->va_nlink);
121 if (attr->va_size != -1) 102 if (attr->va_size != -1)
122 inode->i_size = attr->va_size; 103 inode->i_size = attr->va_size;
123 if (attr->va_size != -1) 104 if (attr->va_size != -1)
124 inode->i_blocks = (attr->va_si 105 inode->i_blocks = (attr->va_size + 511) >> 9;
125 if (attr->va_atime.tv_sec != -1) 106 if (attr->va_atime.tv_sec != -1)
126 inode_set_atime_to_ts(inode, !! 107 inode->i_atime = attr->va_atime;
127 coda_to_ <<
128 if (attr->va_mtime.tv_sec != -1) 108 if (attr->va_mtime.tv_sec != -1)
129 inode_set_mtime_to_ts(inode, !! 109 inode->i_mtime = attr->va_mtime;
130 coda_to_ <<
131 if (attr->va_ctime.tv_sec != -1) 110 if (attr->va_ctime.tv_sec != -1)
132 inode_set_ctime_to_ts(inode, !! 111 inode->i_ctime = attr->va_ctime;
133 coda_to_ <<
134 } 112 }
135 113
136 114
137 /* 115 /*
138 * BSD sets attributes that need not be modifi 116 * BSD sets attributes that need not be modified to -1.
139 * Linux uses the valid field to indicate what 117 * Linux uses the valid field to indicate what should be
140 * looked at. The BSD type field needs to be 118 * looked at. The BSD type field needs to be deduced from linux
141 * mode. 119 * mode.
142 * So we have to do some translations here. 120 * So we have to do some translations here.
143 */ 121 */
144 122
145 void coda_iattr_to_vattr(struct iattr *iattr, 123 void coda_iattr_to_vattr(struct iattr *iattr, struct coda_vattr *vattr)
146 { 124 {
147 unsigned int valid; 125 unsigned int valid;
148 126
149 /* clean out */ 127 /* clean out */
150 vattr->va_mode = -1; 128 vattr->va_mode = -1;
151 vattr->va_uid = (vuid_t) -1; 129 vattr->va_uid = (vuid_t) -1;
152 vattr->va_gid = (vgid_t) -1; 130 vattr->va_gid = (vgid_t) -1;
153 vattr->va_size = (off_t) -1; 131 vattr->va_size = (off_t) -1;
154 vattr->va_atime.tv_sec = (int64_t) -1; !! 132 vattr->va_atime.tv_sec = (time_t) -1;
155 vattr->va_atime.tv_nsec = (long) -1; !! 133 vattr->va_atime.tv_nsec = (time_t) -1;
156 vattr->va_mtime.tv_sec = (int64_t) -1; !! 134 vattr->va_mtime.tv_sec = (time_t) -1;
157 vattr->va_mtime.tv_nsec = (long) -1; !! 135 vattr->va_mtime.tv_nsec = (time_t) -1;
158 vattr->va_ctime.tv_sec = (int64_t) -1; !! 136 vattr->va_ctime.tv_sec = (time_t) -1;
159 vattr->va_ctime.tv_nsec = (long) -1; !! 137 vattr->va_ctime.tv_nsec = (time_t) -1;
160 vattr->va_type = C_VNON; 138 vattr->va_type = C_VNON;
161 vattr->va_fileid = -1; 139 vattr->va_fileid = -1;
162 vattr->va_gen = -1; 140 vattr->va_gen = -1;
163 vattr->va_bytes = -1; 141 vattr->va_bytes = -1;
164 vattr->va_nlink = -1; 142 vattr->va_nlink = -1;
165 vattr->va_blocksize = -1; 143 vattr->va_blocksize = -1;
166 vattr->va_rdev = -1; 144 vattr->va_rdev = -1;
167 vattr->va_flags = 0; 145 vattr->va_flags = 0;
168 146
169 /* determine the type */ 147 /* determine the type */
170 #if 0 148 #if 0
171 mode = iattr->ia_mode; 149 mode = iattr->ia_mode;
172 if ( S_ISDIR(mode) ) { 150 if ( S_ISDIR(mode) ) {
173 vattr->va_type = C_VDIR; 151 vattr->va_type = C_VDIR;
174 } else if ( S_ISREG(mode) ) { 152 } else if ( S_ISREG(mode) ) {
175 vattr->va_type = C_VREG; 153 vattr->va_type = C_VREG;
176 } else if ( S_ISLNK(mode) ) { 154 } else if ( S_ISLNK(mode) ) {
177 vattr->va_type = C_VLNK; 155 vattr->va_type = C_VLNK;
178 } else { 156 } else {
179 /* don't do others */ 157 /* don't do others */
180 vattr->va_type = C_VNON; 158 vattr->va_type = C_VNON;
181 } 159 }
182 #endif 160 #endif
183 161
184 /* set those vattrs that need change * 162 /* set those vattrs that need change */
185 valid = iattr->ia_valid; 163 valid = iattr->ia_valid;
186 if ( valid & ATTR_MODE ) { 164 if ( valid & ATTR_MODE ) {
187 vattr->va_mode = iattr->ia_mod 165 vattr->va_mode = iattr->ia_mode;
188 } 166 }
189 if ( valid & ATTR_UID ) { 167 if ( valid & ATTR_UID ) {
190 vattr->va_uid = (vuid_t) from_ 168 vattr->va_uid = (vuid_t) from_kuid(&init_user_ns, iattr->ia_uid);
191 } 169 }
192 if ( valid & ATTR_GID ) { 170 if ( valid & ATTR_GID ) {
193 vattr->va_gid = (vgid_t) from_ 171 vattr->va_gid = (vgid_t) from_kgid(&init_user_ns, iattr->ia_gid);
194 } 172 }
195 if ( valid & ATTR_SIZE ) { 173 if ( valid & ATTR_SIZE ) {
196 vattr->va_size = iattr->ia_siz 174 vattr->va_size = iattr->ia_size;
197 } 175 }
198 if ( valid & ATTR_ATIME ) { 176 if ( valid & ATTR_ATIME ) {
199 vattr->va_atime = timespec64_t !! 177 vattr->va_atime = iattr->ia_atime;
200 } 178 }
201 if ( valid & ATTR_MTIME ) { 179 if ( valid & ATTR_MTIME ) {
202 vattr->va_mtime = timespec64_t !! 180 vattr->va_mtime = iattr->ia_mtime;
203 } 181 }
204 if ( valid & ATTR_CTIME ) { 182 if ( valid & ATTR_CTIME ) {
205 vattr->va_ctime = timespec64_t !! 183 vattr->va_ctime = iattr->ia_ctime;
206 } 184 }
207 } 185 }
208 186
209 187
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