2 * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
17 #include "kern_util.h"
20 int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
21 int *nlink_out, int *uid_out, int *gid_out,
22 unsigned long long *size_out, struct timespec *atime_out,
23 struct timespec *mtime_out, struct timespec *ctime_out,
24 int *blksize_out, unsigned long long *blocks_out)
28 if(lstat64(path, &buf) < 0)
31 /* See the Makefile for why STAT64_INO_FIELD is passed in
34 if(inode_out != NULL) *inode_out = buf.STAT64_INO_FIELD;
35 if(mode_out != NULL) *mode_out = buf.st_mode;
36 if(nlink_out != NULL) *nlink_out = buf.st_nlink;
37 if(uid_out != NULL) *uid_out = buf.st_uid;
38 if(gid_out != NULL) *gid_out = buf.st_gid;
39 if(size_out != NULL) *size_out = buf.st_size;
40 if(atime_out != NULL) {
41 atime_out->tv_sec = buf.st_atime;
42 atime_out->tv_nsec = 0;
44 if(mtime_out != NULL) {
45 mtime_out->tv_sec = buf.st_mtime;
46 mtime_out->tv_nsec = 0;
48 if(ctime_out != NULL) {
49 ctime_out->tv_sec = buf.st_ctime;
50 ctime_out->tv_nsec = 0;
52 if(blksize_out != NULL) *blksize_out = buf.st_blksize;
53 if(blocks_out != NULL) *blocks_out = buf.st_blocks;
57 int file_type(const char *path, int *rdev)
61 if(lstat64(path, &buf) < 0)
66 if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR);
67 else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK);
68 else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV);
69 else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV);
70 else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO);
71 else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK);
72 else return(OS_TYPE_FILE);
75 int access_file(char *path, int r, int w, int x)
82 if(access(path, mode) != 0) return(-errno);
86 int open_file(char *path, int r, int w, int append)
96 else panic("Impossible mode in open_file");
100 fd = open64(path, mode);
101 if(fd < 0) return(-errno);
105 void *open_dir(char *path, int *err_out)
111 if(dir == NULL) return(NULL);
115 char *read_dir(void *stream, unsigned long long *pos,
116 unsigned long long *ino_out, int *len_out)
123 if(ent == NULL) return(NULL);
124 *len_out = strlen(ent->d_name);
125 *ino_out = ent->d_ino;
130 int read_file(int fd, unsigned long long *offset, char *buf, int len)
134 n = pread64(fd, buf, len, *offset);
135 if(n < 0) return(-errno);
140 int write_file(int fd, unsigned long long *offset, const char *buf, int len)
144 n = pwrite64(fd, buf, len, *offset);
145 if(n < 0) return(-errno);
150 int lseek_file(int fd, long long offset, int whence)
154 ret = lseek64(fd, offset, whence);
155 if(ret < 0) return(-errno);
159 void close_file(void *stream)
161 close(*((int *) stream));
164 void close_dir(void *stream)
169 int file_create(char *name, int ur, int uw, int ux, int gr,
170 int gw, int gx, int or, int ow, int ox)
175 mode |= ur ? S_IRUSR : 0;
176 mode |= uw ? S_IWUSR : 0;
177 mode |= ux ? S_IXUSR : 0;
178 mode |= gr ? S_IRGRP : 0;
179 mode |= gw ? S_IWGRP : 0;
180 mode |= gx ? S_IXGRP : 0;
181 mode |= or ? S_IROTH : 0;
182 mode |= ow ? S_IWOTH : 0;
183 mode |= ox ? S_IXOTH : 0;
184 fd = open64(name, O_CREAT | O_RDWR, mode);
190 int set_attr(const char *file, struct hostfs_iattr *attrs)
195 if(attrs->ia_valid & HOSTFS_ATTR_MODE){
196 if(chmod(file, attrs->ia_mode) != 0) return(-errno);
198 if(attrs->ia_valid & HOSTFS_ATTR_UID){
199 if(chown(file, attrs->ia_uid, -1)) return(-errno);
201 if(attrs->ia_valid & HOSTFS_ATTR_GID){
202 if(chown(file, -1, attrs->ia_gid)) return(-errno);
204 if(attrs->ia_valid & HOSTFS_ATTR_SIZE){
205 if(truncate(file, attrs->ia_size)) return(-errno);
207 ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET;
208 if((attrs->ia_valid & ma) == ma){
209 buf.actime = attrs->ia_atime.tv_sec;
210 buf.modtime = attrs->ia_mtime.tv_sec;
211 if(utime(file, &buf) != 0) return(-errno);
216 if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){
217 err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
218 NULL, NULL, &ts, NULL, NULL, NULL);
221 buf.actime = attrs->ia_atime.tv_sec;
222 buf.modtime = ts.tv_sec;
223 if(utime(file, &buf) != 0)
226 if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){
227 err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
228 NULL, &ts, NULL, NULL, NULL, NULL);
231 buf.actime = ts.tv_sec;
232 buf.modtime = attrs->ia_mtime.tv_sec;
233 if(utime(file, &buf) != 0)
237 if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
238 if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
239 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
240 &attrs->ia_atime, &attrs->ia_mtime, NULL,
242 if(err != 0) return(err);
247 int make_symlink(const char *from, const char *to)
251 err = symlink(to, from);
252 if(err) return(-errno);
256 int unlink_file(const char *file)
261 if(err) return(-errno);
265 int do_mkdir(const char *file, int mode)
269 err = mkdir(file, mode);
270 if(err) return(-errno);
274 int do_rmdir(const char *file)
279 if(err) return(-errno);
283 int do_mknod(const char *file, int mode, int dev)
287 err = mknod(file, mode, dev);
288 if(err) return(-errno);
292 int link_file(const char *to, const char *from)
296 err = link(to, from);
297 if(err) return(-errno);
301 int do_readlink(char *file, char *buf, int size)
305 n = readlink(file, buf, size);
313 int rename_file(char *from, char *to)
317 err = rename(from, to);
318 if(err < 0) return(-errno);
322 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
323 long long *bfree_out, long long *bavail_out,
324 long long *files_out, long long *ffree_out,
325 void *fsid_out, int fsid_size, long *namelen_out,
331 err = statfs64(root, &buf);
332 if(err < 0) return(-errno);
333 *bsize_out = buf.f_bsize;
334 *blocks_out = buf.f_blocks;
335 *bfree_out = buf.f_bfree;
336 *bavail_out = buf.f_bavail;
337 *files_out = buf.f_files;
338 *ffree_out = buf.f_ffree;
339 memcpy(fsid_out, &buf.f_fsid,
340 sizeof(buf.f_fsid) > fsid_size ? fsid_size :
342 *namelen_out = buf.f_namelen;
343 spare_out[0] = buf.f_spare[0];
344 spare_out[1] = buf.f_spare[1];
345 spare_out[2] = buf.f_spare[2];
346 spare_out[3] = buf.f_spare[3];
347 spare_out[4] = buf.f_spare[4];
348 spare_out[5] = buf.f_spare[5];
353 * Overrides for Emacs so that we follow Linus's tabbing style.
354 * Emacs will notice this stuff at the end of the file and automatically
355 * adjust the settings for this buffer only. This must remain at the end
357 * ---------------------------------------------------------------------------
359 * c-file-style: "linux"