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, int fd)
29 if (fstat64(fd, &buf) < 0)
31 } else if(lstat64(path, &buf) < 0) {
35 if(inode_out != NULL) *inode_out = buf.st_ino;
36 if(mode_out != NULL) *mode_out = buf.st_mode;
37 if(nlink_out != NULL) *nlink_out = buf.st_nlink;
38 if(uid_out != NULL) *uid_out = buf.st_uid;
39 if(gid_out != NULL) *gid_out = buf.st_gid;
40 if(size_out != NULL) *size_out = buf.st_size;
41 if(atime_out != NULL) {
42 atime_out->tv_sec = buf.st_atime;
43 atime_out->tv_nsec = 0;
45 if(mtime_out != NULL) {
46 mtime_out->tv_sec = buf.st_mtime;
47 mtime_out->tv_nsec = 0;
49 if(ctime_out != NULL) {
50 ctime_out->tv_sec = buf.st_ctime;
51 ctime_out->tv_nsec = 0;
53 if(blksize_out != NULL) *blksize_out = buf.st_blksize;
54 if(blocks_out != NULL) *blocks_out = buf.st_blocks;
58 int file_type(const char *path, int *maj, int *min)
62 if(lstat64(path, &buf) < 0)
64 /*We cannot pass rdev as is because glibc and the kernel disagree
65 *about its definition.*/
67 *maj = major(buf.st_rdev);
69 *min = minor(buf.st_rdev);
71 if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR);
72 else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK);
73 else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV);
74 else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV);
75 else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO);
76 else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK);
77 else return(OS_TYPE_FILE);
80 int access_file(char *path, int r, int w, int x)
87 if(access(path, mode) != 0) return(-errno);
91 int open_file(char *path, int r, int w, int append)
101 else panic("Impossible mode in open_file");
105 fd = open64(path, mode);
106 if(fd < 0) return(-errno);
110 void *open_dir(char *path, int *err_out)
116 if(dir == NULL) return(NULL);
120 char *read_dir(void *stream, unsigned long long *pos,
121 unsigned long long *ino_out, int *len_out)
128 if(ent == NULL) return(NULL);
129 *len_out = strlen(ent->d_name);
130 *ino_out = ent->d_ino;
135 int read_file(int fd, unsigned long long *offset, char *buf, int len)
139 n = pread64(fd, buf, len, *offset);
140 if(n < 0) return(-errno);
145 int write_file(int fd, unsigned long long *offset, const char *buf, int len)
149 n = pwrite64(fd, buf, len, *offset);
150 if(n < 0) return(-errno);
155 int lseek_file(int fd, long long offset, int whence)
159 ret = lseek64(fd, offset, whence);
165 int fsync_file(int fd, int datasync)
178 void close_file(void *stream)
180 close(*((int *) stream));
183 void close_dir(void *stream)
188 int file_create(char *name, int ur, int uw, int ux, int gr,
189 int gw, int gx, int or, int ow, int ox)
194 mode |= ur ? S_IRUSR : 0;
195 mode |= uw ? S_IWUSR : 0;
196 mode |= ux ? S_IXUSR : 0;
197 mode |= gr ? S_IRGRP : 0;
198 mode |= gw ? S_IWGRP : 0;
199 mode |= gx ? S_IXGRP : 0;
200 mode |= or ? S_IROTH : 0;
201 mode |= ow ? S_IWOTH : 0;
202 mode |= ox ? S_IXOTH : 0;
203 fd = open64(name, O_CREAT | O_RDWR, mode);
209 int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
211 struct timeval times[2];
212 struct timespec atime_ts, mtime_ts;
215 if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
217 if (fchmod(fd, attrs->ia_mode) != 0)
219 } else if (chmod(file, attrs->ia_mode) != 0) {
223 if (attrs->ia_valid & HOSTFS_ATTR_UID) {
225 if (fchown(fd, attrs->ia_uid, -1))
227 } else if(chown(file, attrs->ia_uid, -1)) {
231 if (attrs->ia_valid & HOSTFS_ATTR_GID) {
233 if (fchown(fd, -1, attrs->ia_gid))
235 } else if (chown(file, -1, attrs->ia_gid)) {
239 if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
241 if (ftruncate(fd, attrs->ia_size))
243 } else if (truncate(file, attrs->ia_size)) {
248 /* Update accessed and/or modified time, in two parts: first set
249 * times according to the changes to perform, and then call futimes()
250 * or utimes() to apply them. */
251 ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
252 if (attrs->ia_valid & ma) {
253 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
254 &atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
258 times[0].tv_sec = atime_ts.tv_sec;
259 times[0].tv_usec = atime_ts.tv_nsec * 1000;
260 times[1].tv_sec = mtime_ts.tv_sec;
261 times[1].tv_usec = mtime_ts.tv_nsec * 1000;
263 if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
264 times[0].tv_sec = attrs->ia_atime.tv_sec;
265 times[0].tv_usec = attrs->ia_atime.tv_nsec * 1000;
267 if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
268 times[1].tv_sec = attrs->ia_mtime.tv_sec;
269 times[1].tv_usec = attrs->ia_mtime.tv_nsec * 1000;
273 if (futimes(fd, times) != 0)
275 } else if (utimes(file, times) != 0) {
280 if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
281 if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
282 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
283 &attrs->ia_atime, &attrs->ia_mtime, NULL,
285 if(err != 0) return(err);
290 int make_symlink(const char *from, const char *to)
294 err = symlink(to, from);
295 if(err) return(-errno);
299 int unlink_file(const char *file)
304 if(err) return(-errno);
308 int do_mkdir(const char *file, int mode)
312 err = mkdir(file, mode);
313 if(err) return(-errno);
317 int do_rmdir(const char *file)
322 if(err) return(-errno);
326 int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
330 err = mknod(file, mode, makedev(major, minor));
331 if(err) return(-errno);
335 int link_file(const char *to, const char *from)
339 err = link(to, from);
340 if(err) return(-errno);
344 int do_readlink(char *file, char *buf, int size)
348 n = readlink(file, buf, size);
356 int rename_file(char *from, char *to)
360 err = rename(from, to);
361 if(err < 0) return(-errno);
365 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
366 long long *bfree_out, long long *bavail_out,
367 long long *files_out, long long *ffree_out,
368 void *fsid_out, int fsid_size, long *namelen_out,
374 err = statfs64(root, &buf);
375 if(err < 0) return(-errno);
376 *bsize_out = buf.f_bsize;
377 *blocks_out = buf.f_blocks;
378 *bfree_out = buf.f_bfree;
379 *bavail_out = buf.f_bavail;
380 *files_out = buf.f_files;
381 *ffree_out = buf.f_ffree;
382 memcpy(fsid_out, &buf.f_fsid,
383 sizeof(buf.f_fsid) > fsid_size ? fsid_size :
385 *namelen_out = buf.f_namelen;
386 spare_out[0] = buf.f_spare[0];
387 spare_out[1] = buf.f_spare[1];
388 spare_out[2] = buf.f_spare[2];
389 spare_out[3] = buf.f_spare[3];
390 spare_out[4] = buf.f_spare[4];
395 * Overrides for Emacs so that we follow Linus's tabbing style.
396 * Emacs will notice this stuff at the end of the file and automatically
397 * adjust the settings for this buffer only. This must remain at the end
399 * ---------------------------------------------------------------------------
401 * c-file-style: "linux"