2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.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)
92 int open_file(char *path, int r, int w, int append)
102 else panic("Impossible mode in open_file");
106 fd = open64(path, mode);
112 void *open_dir(char *path, int *err_out)
123 char *read_dir(void *stream, unsigned long long *pos,
124 unsigned long long *ino_out, int *len_out)
133 *len_out = strlen(ent->d_name);
134 *ino_out = ent->d_ino;
139 int read_file(int fd, unsigned long long *offset, char *buf, int len)
143 n = pread64(fd, buf, len, *offset);
150 int write_file(int fd, unsigned long long *offset, const char *buf, int len)
154 n = pwrite64(fd, buf, len, *offset);
161 int lseek_file(int fd, long long offset, int whence)
165 ret = lseek64(fd, offset, whence);
171 int fsync_file(int fd, int datasync)
184 void close_file(void *stream)
186 close(*((int *) stream));
189 void close_dir(void *stream)
194 int file_create(char *name, int ur, int uw, int ux, int gr,
195 int gw, int gx, int or, int ow, int ox)
200 mode |= ur ? S_IRUSR : 0;
201 mode |= uw ? S_IWUSR : 0;
202 mode |= ux ? S_IXUSR : 0;
203 mode |= gr ? S_IRGRP : 0;
204 mode |= gw ? S_IWGRP : 0;
205 mode |= gx ? S_IXGRP : 0;
206 mode |= or ? S_IROTH : 0;
207 mode |= ow ? S_IWOTH : 0;
208 mode |= ox ? S_IXOTH : 0;
209 fd = open64(name, O_CREAT | O_RDWR, mode);
215 int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
217 struct timeval times[2];
218 struct timespec atime_ts, mtime_ts;
221 if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
223 if (fchmod(fd, attrs->ia_mode) != 0)
225 } else if (chmod(file, attrs->ia_mode) != 0) {
229 if (attrs->ia_valid & HOSTFS_ATTR_UID) {
231 if (fchown(fd, attrs->ia_uid, -1))
233 } else if(chown(file, attrs->ia_uid, -1)) {
237 if (attrs->ia_valid & HOSTFS_ATTR_GID) {
239 if (fchown(fd, -1, attrs->ia_gid))
241 } else if (chown(file, -1, attrs->ia_gid)) {
245 if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
247 if (ftruncate(fd, attrs->ia_size))
249 } else if (truncate(file, attrs->ia_size)) {
254 /* Update accessed and/or modified time, in two parts: first set
255 * times according to the changes to perform, and then call futimes()
256 * or utimes() to apply them. */
257 ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
258 if (attrs->ia_valid & ma) {
259 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
260 &atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
264 times[0].tv_sec = atime_ts.tv_sec;
265 times[0].tv_usec = atime_ts.tv_nsec * 1000;
266 times[1].tv_sec = mtime_ts.tv_sec;
267 times[1].tv_usec = mtime_ts.tv_nsec * 1000;
269 if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
270 times[0].tv_sec = attrs->ia_atime.tv_sec;
271 times[0].tv_usec = attrs->ia_atime.tv_nsec * 1000;
273 if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
274 times[1].tv_sec = attrs->ia_mtime.tv_sec;
275 times[1].tv_usec = attrs->ia_mtime.tv_nsec * 1000;
279 if (futimes(fd, times) != 0)
281 } else if (utimes(file, times) != 0) {
286 if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
287 if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
288 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
289 &attrs->ia_atime, &attrs->ia_mtime, NULL,
297 int make_symlink(const char *from, const char *to)
301 err = symlink(to, from);
307 int unlink_file(const char *file)
317 int do_mkdir(const char *file, int mode)
321 err = mkdir(file, mode);
327 int do_rmdir(const char *file)
337 int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
341 err = mknod(file, mode, makedev(major, minor));
347 int link_file(const char *to, const char *from)
351 err = link(to, from);
357 int do_readlink(char *file, char *buf, int size)
361 n = readlink(file, buf, size);
369 int rename_file(char *from, char *to)
373 err = rename(from, to);
379 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
380 long long *bfree_out, long long *bavail_out,
381 long long *files_out, long long *ffree_out,
382 void *fsid_out, int fsid_size, long *namelen_out,
388 err = statfs64(root, &buf);
392 *bsize_out = buf.f_bsize;
393 *blocks_out = buf.f_blocks;
394 *bfree_out = buf.f_bfree;
395 *bavail_out = buf.f_bavail;
396 *files_out = buf.f_files;
397 *ffree_out = buf.f_ffree;
398 memcpy(fsid_out, &buf.f_fsid,
399 sizeof(buf.f_fsid) > fsid_size ? fsid_size :
401 *namelen_out = buf.f_namelen;
402 spare_out[0] = buf.f_spare[0];
403 spare_out[1] = buf.f_spare[1];
404 spare_out[2] = buf.f_spare[2];
405 spare_out[3] = buf.f_spare[3];
406 spare_out[4] = buf.f_spare[4];