2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
15 #include <sys/types.h>
22 int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
23 int *nlink_out, int *uid_out, int *gid_out,
24 unsigned long long *size_out, struct timespec *atime_out,
25 struct timespec *mtime_out, struct timespec *ctime_out,
26 int *blksize_out, unsigned long long *blocks_out, int fd)
31 if (fstat64(fd, &buf) < 0)
33 } else if (lstat64(path, &buf) < 0) {
37 if (inode_out != NULL)
38 *inode_out = buf.st_ino;
40 *mode_out = buf.st_mode;
41 if (nlink_out != NULL)
42 *nlink_out = buf.st_nlink;
44 *uid_out = buf.st_uid;
46 *gid_out = buf.st_gid;
48 *size_out = buf.st_size;
49 if (atime_out != NULL) {
50 atime_out->tv_sec = buf.st_atime;
51 atime_out->tv_nsec = 0;
53 if (mtime_out != NULL) {
54 mtime_out->tv_sec = buf.st_mtime;
55 mtime_out->tv_nsec = 0;
57 if (ctime_out != NULL) {
58 ctime_out->tv_sec = buf.st_ctime;
59 ctime_out->tv_nsec = 0;
61 if (blksize_out != NULL)
62 *blksize_out = buf.st_blksize;
63 if (blocks_out != NULL)
64 *blocks_out = buf.st_blocks;
68 int file_type(const char *path, int *maj, int *min)
72 if (lstat64(path, &buf) < 0)
75 * We cannot pass rdev as is because glibc and the kernel disagree
76 * about its definition.
79 *maj = major(buf.st_rdev);
81 *min = minor(buf.st_rdev);
83 if (S_ISDIR(buf.st_mode))
85 else if (S_ISLNK(buf.st_mode))
86 return OS_TYPE_SYMLINK;
87 else if (S_ISCHR(buf.st_mode))
88 return OS_TYPE_CHARDEV;
89 else if (S_ISBLK(buf.st_mode))
90 return OS_TYPE_BLOCKDEV;
91 else if (S_ISFIFO(buf.st_mode))
93 else if (S_ISSOCK(buf.st_mode))
95 else return OS_TYPE_FILE;
98 int access_file(char *path, int r, int w, int x)
108 if (access(path, mode) != 0)
113 int open_file(char *path, int r, int w, int append)
123 else panic("Impossible mode in open_file");
127 fd = open64(path, mode);
133 void *open_dir(char *path, int *err_out)
144 char *read_dir(void *stream, unsigned long long *pos,
145 unsigned long long *ino_out, int *len_out)
154 *len_out = strlen(ent->d_name);
155 *ino_out = ent->d_ino;
160 int read_file(int fd, unsigned long long *offset, char *buf, int len)
164 n = pread64(fd, buf, len, *offset);
171 int write_file(int fd, unsigned long long *offset, const char *buf, int len)
175 n = pwrite64(fd, buf, len, *offset);
182 int lseek_file(int fd, long long offset, int whence)
186 ret = lseek64(fd, offset, whence);
192 int fsync_file(int fd, int datasync)
205 void close_file(void *stream)
207 close(*((int *) stream));
210 void close_dir(void *stream)
215 int file_create(char *name, int ur, int uw, int ux, int gr,
216 int gw, int gx, int or, int ow, int ox)
221 mode |= ur ? S_IRUSR : 0;
222 mode |= uw ? S_IWUSR : 0;
223 mode |= ux ? S_IXUSR : 0;
224 mode |= gr ? S_IRGRP : 0;
225 mode |= gw ? S_IWGRP : 0;
226 mode |= gx ? S_IXGRP : 0;
227 mode |= or ? S_IROTH : 0;
228 mode |= ow ? S_IWOTH : 0;
229 mode |= ox ? S_IXOTH : 0;
230 fd = open64(name, O_CREAT | O_RDWR, mode);
236 int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
238 struct timeval times[2];
239 struct timespec atime_ts, mtime_ts;
242 if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
244 if (fchmod(fd, attrs->ia_mode) != 0)
246 } else if (chmod(file, attrs->ia_mode) != 0) {
250 if (attrs->ia_valid & HOSTFS_ATTR_UID) {
252 if (fchown(fd, attrs->ia_uid, -1))
254 } else if (chown(file, attrs->ia_uid, -1)) {
258 if (attrs->ia_valid & HOSTFS_ATTR_GID) {
260 if (fchown(fd, -1, attrs->ia_gid))
262 } else if (chown(file, -1, attrs->ia_gid)) {
266 if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
268 if (ftruncate(fd, attrs->ia_size))
270 } else if (truncate(file, attrs->ia_size)) {
276 * Update accessed and/or modified time, in two parts: first set
277 * times according to the changes to perform, and then call futimes()
278 * or utimes() to apply them.
280 ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
281 if (attrs->ia_valid & ma) {
282 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
283 &atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
287 times[0].tv_sec = atime_ts.tv_sec;
288 times[0].tv_usec = atime_ts.tv_nsec / 1000;
289 times[1].tv_sec = mtime_ts.tv_sec;
290 times[1].tv_usec = mtime_ts.tv_nsec / 1000;
292 if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
293 times[0].tv_sec = attrs->ia_atime.tv_sec;
294 times[0].tv_usec = attrs->ia_atime.tv_nsec / 1000;
296 if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
297 times[1].tv_sec = attrs->ia_mtime.tv_sec;
298 times[1].tv_usec = attrs->ia_mtime.tv_nsec / 1000;
302 if (futimes(fd, times) != 0)
304 } else if (utimes(file, times) != 0) {
309 /* Note: ctime is not handled */
310 if (attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)) {
311 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
312 &attrs->ia_atime, &attrs->ia_mtime, NULL,
320 int make_symlink(const char *from, const char *to)
324 err = symlink(to, from);
330 int unlink_file(const char *file)
340 int do_mkdir(const char *file, int mode)
344 err = mkdir(file, mode);
350 int do_rmdir(const char *file)
360 int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
364 err = mknod(file, mode, makedev(major, minor));
370 int link_file(const char *to, const char *from)
374 err = link(to, from);
380 int hostfs_do_readlink(char *file, char *buf, int size)
384 n = readlink(file, buf, size);
392 int rename_file(char *from, char *to)
396 err = rename(from, to);
402 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
403 long long *bfree_out, long long *bavail_out,
404 long long *files_out, long long *ffree_out,
405 void *fsid_out, int fsid_size, long *namelen_out,
411 err = statfs64(root, &buf);
415 *bsize_out = buf.f_bsize;
416 *blocks_out = buf.f_blocks;
417 *bfree_out = buf.f_bfree;
418 *bavail_out = buf.f_bavail;
419 *files_out = buf.f_files;
420 *ffree_out = buf.f_ffree;
421 memcpy(fsid_out, &buf.f_fsid,
422 sizeof(buf.f_fsid) > fsid_size ? fsid_size :
424 *namelen_out = buf.f_namelen;
425 spare_out[0] = buf.f_spare[0];
426 spare_out[1] = buf.f_spare[1];
427 spare_out[2] = buf.f_spare[2];
428 spare_out[3] = buf.f_spare[3];
429 spare_out[4] = buf.f_spare[4];