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1 | /* File-I/O functions for GDB, the GNU debugger. | |
2 | ||
3 | Copyright (C) 2003-2024 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "common-defs.h" | |
21 | #include "fileio.h" | |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | ||
25 | /* See fileio.h. */ | |
26 | ||
27 | fileio_error | |
28 | host_to_fileio_error (int error) | |
29 | { | |
30 | switch (error) | |
31 | { | |
32 | case EPERM: | |
33 | return FILEIO_EPERM; | |
34 | case ENOENT: | |
35 | return FILEIO_ENOENT; | |
36 | case EINTR: | |
37 | return FILEIO_EINTR; | |
38 | case EIO: | |
39 | return FILEIO_EIO; | |
40 | case EBADF: | |
41 | return FILEIO_EBADF; | |
42 | case EACCES: | |
43 | return FILEIO_EACCES; | |
44 | case EFAULT: | |
45 | return FILEIO_EFAULT; | |
46 | case EBUSY: | |
47 | return FILEIO_EBUSY; | |
48 | case EEXIST: | |
49 | return FILEIO_EEXIST; | |
50 | case ENODEV: | |
51 | return FILEIO_ENODEV; | |
52 | case ENOTDIR: | |
53 | return FILEIO_ENOTDIR; | |
54 | case EISDIR: | |
55 | return FILEIO_EISDIR; | |
56 | case EINVAL: | |
57 | return FILEIO_EINVAL; | |
58 | case ENFILE: | |
59 | return FILEIO_ENFILE; | |
60 | case EMFILE: | |
61 | return FILEIO_EMFILE; | |
62 | case EFBIG: | |
63 | return FILEIO_EFBIG; | |
64 | case ENOSPC: | |
65 | return FILEIO_ENOSPC; | |
66 | case ESPIPE: | |
67 | return FILEIO_ESPIPE; | |
68 | case EROFS: | |
69 | return FILEIO_EROFS; | |
70 | case ENOSYS: | |
71 | return FILEIO_ENOSYS; | |
72 | case ENAMETOOLONG: | |
73 | return FILEIO_ENAMETOOLONG; | |
74 | } | |
75 | return FILEIO_EUNKNOWN; | |
76 | } | |
77 | ||
78 | /* See fileio.h. */ | |
79 | ||
80 | int | |
81 | fileio_error_to_host (fileio_error errnum) | |
82 | { | |
83 | switch (errnum) | |
84 | { | |
85 | case FILEIO_EPERM: | |
86 | return EPERM; | |
87 | case FILEIO_ENOENT: | |
88 | return ENOENT; | |
89 | case FILEIO_EINTR: | |
90 | return EINTR; | |
91 | case FILEIO_EIO: | |
92 | return EIO; | |
93 | case FILEIO_EBADF: | |
94 | return EBADF; | |
95 | case FILEIO_EACCES: | |
96 | return EACCES; | |
97 | case FILEIO_EFAULT: | |
98 | return EFAULT; | |
99 | case FILEIO_EBUSY: | |
100 | return EBUSY; | |
101 | case FILEIO_EEXIST: | |
102 | return EEXIST; | |
103 | case FILEIO_ENODEV: | |
104 | return ENODEV; | |
105 | case FILEIO_ENOTDIR: | |
106 | return ENOTDIR; | |
107 | case FILEIO_EISDIR: | |
108 | return EISDIR; | |
109 | case FILEIO_EINVAL: | |
110 | return EINVAL; | |
111 | case FILEIO_ENFILE: | |
112 | return ENFILE; | |
113 | case FILEIO_EMFILE: | |
114 | return EMFILE; | |
115 | case FILEIO_EFBIG: | |
116 | return EFBIG; | |
117 | case FILEIO_ENOSPC: | |
118 | return ENOSPC; | |
119 | case FILEIO_ESPIPE: | |
120 | return ESPIPE; | |
121 | case FILEIO_EROFS: | |
122 | return EROFS; | |
123 | case FILEIO_ENOSYS: | |
124 | return ENOSYS; | |
125 | case FILEIO_ENAMETOOLONG: | |
126 | return ENAMETOOLONG; | |
127 | } | |
128 | return -1; | |
129 | } | |
130 | ||
131 | /* See fileio.h. */ | |
132 | ||
133 | int | |
134 | fileio_to_host_openflags (int fileio_open_flags, int *open_flags_p) | |
135 | { | |
136 | int open_flags = 0; | |
137 | ||
138 | if (fileio_open_flags & ~FILEIO_O_SUPPORTED) | |
139 | return -1; | |
140 | ||
141 | if (fileio_open_flags & FILEIO_O_CREAT) | |
142 | open_flags |= O_CREAT; | |
143 | if (fileio_open_flags & FILEIO_O_EXCL) | |
144 | open_flags |= O_EXCL; | |
145 | if (fileio_open_flags & FILEIO_O_TRUNC) | |
146 | open_flags |= O_TRUNC; | |
147 | if (fileio_open_flags & FILEIO_O_APPEND) | |
148 | open_flags |= O_APPEND; | |
149 | if (fileio_open_flags & FILEIO_O_RDONLY) | |
150 | open_flags |= O_RDONLY; | |
151 | if (fileio_open_flags & FILEIO_O_WRONLY) | |
152 | open_flags |= O_WRONLY; | |
153 | if (fileio_open_flags & FILEIO_O_RDWR) | |
154 | open_flags |= O_RDWR; | |
155 | /* On systems supporting binary and text mode, always open files | |
156 | in binary mode. */ | |
157 | #ifdef O_BINARY | |
158 | open_flags |= O_BINARY; | |
159 | #endif | |
160 | ||
161 | *open_flags_p = open_flags; | |
162 | return 0; | |
163 | } | |
164 | ||
165 | /* See fileio.h. */ | |
166 | ||
167 | int | |
168 | fileio_to_host_mode (int fileio_mode, mode_t *mode_p) | |
169 | { | |
170 | mode_t mode = 0; | |
171 | ||
172 | if (fileio_mode & ~FILEIO_S_SUPPORTED) | |
173 | return -1; | |
174 | ||
175 | if (fileio_mode & FILEIO_S_IFREG) | |
176 | mode |= S_IFREG; | |
177 | if (fileio_mode & FILEIO_S_IFDIR) | |
178 | mode |= S_IFDIR; | |
179 | if (fileio_mode & FILEIO_S_IFCHR) | |
180 | mode |= S_IFCHR; | |
181 | if (fileio_mode & FILEIO_S_IRUSR) | |
182 | mode |= S_IRUSR; | |
183 | if (fileio_mode & FILEIO_S_IWUSR) | |
184 | mode |= S_IWUSR; | |
185 | if (fileio_mode & FILEIO_S_IXUSR) | |
186 | mode |= S_IXUSR; | |
187 | #ifdef S_IRGRP | |
188 | if (fileio_mode & FILEIO_S_IRGRP) | |
189 | mode |= S_IRGRP; | |
190 | #endif | |
191 | #ifdef S_IWGRP | |
192 | if (fileio_mode & FILEIO_S_IWGRP) | |
193 | mode |= S_IWGRP; | |
194 | #endif | |
195 | #ifdef S_IXGRP | |
196 | if (fileio_mode & FILEIO_S_IXGRP) | |
197 | mode |= S_IXGRP; | |
198 | #endif | |
199 | if (fileio_mode & FILEIO_S_IROTH) | |
200 | mode |= S_IROTH; | |
201 | #ifdef S_IWOTH | |
202 | if (fileio_mode & FILEIO_S_IWOTH) | |
203 | mode |= S_IWOTH; | |
204 | #endif | |
205 | #ifdef S_IXOTH | |
206 | if (fileio_mode & FILEIO_S_IXOTH) | |
207 | mode |= S_IXOTH; | |
208 | #endif | |
209 | ||
210 | *mode_p = mode; | |
211 | return 0; | |
212 | } | |
213 | ||
214 | /* Convert a host-format mode_t into a bitmask of File-I/O flags. */ | |
215 | ||
216 | static LONGEST | |
217 | fileio_mode_pack (mode_t mode) | |
218 | { | |
219 | mode_t tmode = 0; | |
220 | ||
221 | if (S_ISREG (mode)) | |
222 | tmode |= FILEIO_S_IFREG; | |
223 | if (S_ISDIR (mode)) | |
224 | tmode |= FILEIO_S_IFDIR; | |
225 | if (S_ISCHR (mode)) | |
226 | tmode |= FILEIO_S_IFCHR; | |
227 | if (mode & S_IRUSR) | |
228 | tmode |= FILEIO_S_IRUSR; | |
229 | if (mode & S_IWUSR) | |
230 | tmode |= FILEIO_S_IWUSR; | |
231 | if (mode & S_IXUSR) | |
232 | tmode |= FILEIO_S_IXUSR; | |
233 | #ifdef S_IRGRP | |
234 | if (mode & S_IRGRP) | |
235 | tmode |= FILEIO_S_IRGRP; | |
236 | #endif | |
237 | #ifdef S_IWGRP | |
238 | if (mode & S_IWGRP) | |
239 | tmode |= FILEIO_S_IWGRP; | |
240 | #endif | |
241 | #ifdef S_IXGRP | |
242 | if (mode & S_IXGRP) | |
243 | tmode |= FILEIO_S_IXGRP; | |
244 | #endif | |
245 | if (mode & S_IROTH) | |
246 | tmode |= FILEIO_S_IROTH; | |
247 | #ifdef S_IWOTH | |
248 | if (mode & S_IWOTH) | |
249 | tmode |= FILEIO_S_IWOTH; | |
250 | #endif | |
251 | #ifdef S_IXOTH | |
252 | if (mode & S_IXOTH) | |
253 | tmode |= FILEIO_S_IXOTH; | |
254 | #endif | |
255 | return tmode; | |
256 | } | |
257 | ||
258 | /* Pack a host-format mode_t into an fio_mode_t. */ | |
259 | ||
260 | static void | |
261 | host_to_fileio_mode (mode_t num, fio_mode_t fnum) | |
262 | { | |
263 | host_to_bigendian (fileio_mode_pack (num), (char *) fnum, 4); | |
264 | } | |
265 | ||
266 | /* Pack a host-format integer into an fio_ulong_t. */ | |
267 | ||
268 | static void | |
269 | host_to_fileio_ulong (LONGEST num, fio_ulong_t fnum) | |
270 | { | |
271 | host_to_bigendian (num, (char *) fnum, 8); | |
272 | } | |
273 | ||
274 | /* See fileio.h. */ | |
275 | ||
276 | void | |
277 | host_to_fileio_stat (struct stat *st, struct fio_stat *fst) | |
278 | { | |
279 | LONGEST blksize; | |
280 | ||
281 | host_to_fileio_uint ((long) st->st_dev, fst->fst_dev); | |
282 | host_to_fileio_uint ((long) st->st_ino, fst->fst_ino); | |
283 | host_to_fileio_mode (st->st_mode, fst->fst_mode); | |
284 | host_to_fileio_uint ((long) st->st_nlink, fst->fst_nlink); | |
285 | host_to_fileio_uint ((long) st->st_uid, fst->fst_uid); | |
286 | host_to_fileio_uint ((long) st->st_gid, fst->fst_gid); | |
287 | host_to_fileio_uint ((long) st->st_rdev, fst->fst_rdev); | |
288 | host_to_fileio_ulong ((LONGEST) st->st_size, fst->fst_size); | |
289 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
290 | blksize = st->st_blksize; | |
291 | #else | |
292 | blksize = 512; | |
293 | #endif | |
294 | host_to_fileio_ulong (blksize, fst->fst_blksize); | |
295 | #if HAVE_STRUCT_STAT_ST_BLOCKS | |
296 | host_to_fileio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks); | |
297 | #else | |
298 | /* FIXME: This is correct for DJGPP, but other systems that don't | |
299 | have st_blocks, if any, might prefer 512 instead of st_blksize. | |
300 | (eliz, 30-12-2003) */ | |
301 | host_to_fileio_ulong (((LONGEST) st->st_size + blksize - 1) | |
302 | / blksize, | |
303 | fst->fst_blocks); | |
304 | #endif | |
305 | host_to_fileio_time (st->st_atime, fst->fst_atime); | |
306 | host_to_fileio_time (st->st_mtime, fst->fst_mtime); | |
307 | host_to_fileio_time (st->st_ctime, fst->fst_ctime); | |
308 | } |