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 *maj, int *min)
61 if(lstat64(path, &buf) < 0)
63 /*We cannot pass rdev as is because glibc and the kernel disagree
64 *about its definition.*/
66 *maj = major(buf.st_rdev);
68 *min = minor(buf.st_rdev);
70 if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR);
71 else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK);
72 else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV);
73 else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV);
74 else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO);
75 else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK);
76 else return(OS_TYPE_FILE);
79 int access_file(char *path, int r, int w, int x)
86 if(access(path, mode) != 0) return(-errno);
90 int open_file(char *path, int r, int w, int append)
100 else panic("Impossible mode in open_file");
104 fd = open64(path, mode);
105 if(fd < 0) return(-errno);
109 void *open_dir(char *path, int *err_out)
115 if(dir == NULL) return(NULL);
119 char *read_dir(void *stream, unsigned long long *pos,
120 unsigned long long *ino_out, int *len_out)
127 if(ent == NULL) return(NULL);
128 *len_out = strlen(ent->d_name);
129 *ino_out = ent->d_ino;
134 int read_file(int fd, unsigned long long *offset, char *buf, int len)
138 n = pread64(fd, buf, len, *offset);
139 if(n < 0) return(-errno);
144 int write_file(int fd, unsigned long long *offset, const char *buf, int len)
148 n = pwrite64(fd, buf, len, *offset);
149 if(n < 0) return(-errno);
154 int lseek_file(int fd, long long offset, int whence)
158 ret = lseek64(fd, offset, whence);
159 if(ret < 0) return(-errno);
163 void close_file(void *stream)
165 close(*((int *) stream));
168 void close_dir(void *stream)
173 int file_create(char *name, int ur, int uw, int ux, int gr,
174 int gw, int gx, int or, int ow, int ox)
179 mode |= ur ? S_IRUSR : 0;
180 mode |= uw ? S_IWUSR : 0;
181 mode |= ux ? S_IXUSR : 0;
182 mode |= gr ? S_IRGRP : 0;
183 mode |= gw ? S_IWGRP : 0;
184 mode |= gx ? S_IXGRP : 0;
185 mode |= or ? S_IROTH : 0;
186 mode |= ow ? S_IWOTH : 0;
187 mode |= ox ? S_IXOTH : 0;
188 fd = open64(name, O_CREAT | O_RDWR, mode);
194 int set_attr(const char *file, struct hostfs_iattr *attrs)
199 if(attrs->ia_valid & HOSTFS_ATTR_MODE){
200 if(chmod(file, attrs->ia_mode) != 0) return(-errno);
202 if(attrs->ia_valid & HOSTFS_ATTR_UID){
203 if(chown(file, attrs->ia_uid, -1)) return(-errno);
205 if(attrs->ia_valid & HOSTFS_ATTR_GID){
206 if(chown(file, -1, attrs->ia_gid)) return(-errno);
208 if(attrs->ia_valid & HOSTFS_ATTR_SIZE){
209 if(truncate(file, attrs->ia_size)) return(-errno);
211 ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET;
212 if((attrs->ia_valid & ma) == ma){
213 buf.actime = attrs->ia_atime.tv_sec;
214 buf.modtime = attrs->ia_mtime.tv_sec;
215 if(utime(file, &buf) != 0) return(-errno);
220 if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){
221 err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
222 NULL, NULL, &ts, NULL, NULL, NULL);
225 buf.actime = attrs->ia_atime.tv_sec;
226 buf.modtime = ts.tv_sec;
227 if(utime(file, &buf) != 0)
230 if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){
231 err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
232 NULL, &ts, NULL, NULL, NULL, NULL);
235 buf.actime = ts.tv_sec;
236 buf.modtime = attrs->ia_mtime.tv_sec;
237 if(utime(file, &buf) != 0)
241 if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
242 if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
243 err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
244 &attrs->ia_atime, &attrs->ia_mtime, NULL,
246 if(err != 0) return(err);
251 int make_symlink(const char *from, const char *to)
255 err = symlink(to, from);
256 if(err) return(-errno);
260 int unlink_file(const char *file)
265 if(err) return(-errno);
269 int do_mkdir(const char *file, int mode)
273 err = mkdir(file, mode);
274 if(err) return(-errno);
278 int do_rmdir(const char *file)
283 if(err) return(-errno);
287 int do_mknod(const char *file, int mode, int dev)
291 err = mknod(file, mode, dev);
292 if(err) return(-errno);
296 int link_file(const char *to, const char *from)
300 err = link(to, from);
301 if(err) return(-errno);
305 int do_readlink(char *file, char *buf, int size)
309 n = readlink(file, buf, size);
317 int rename_file(char *from, char *to)
321 err = rename(from, to);
322 if(err < 0) return(-errno);
326 int do_statfs(char *root, long *bsize_out, long long *blocks_out,
327 long long *bfree_out, long long *bavail_out,
328 long long *files_out, long long *ffree_out,
329 void *fsid_out, int fsid_size, long *namelen_out,
335 err = statfs64(root, &buf);
336 if(err < 0) return(-errno);
337 *bsize_out = buf.f_bsize;
338 *blocks_out = buf.f_blocks;
339 *bfree_out = buf.f_bfree;
340 *bavail_out = buf.f_bavail;
341 *files_out = buf.f_files;
342 *ffree_out = buf.f_ffree;
343 memcpy(fsid_out, &buf.f_fsid,
344 sizeof(buf.f_fsid) > fsid_size ? fsid_size :
346 *namelen_out = buf.f_namelen;
347 spare_out[0] = buf.f_spare[0];
348 spare_out[1] = buf.f_spare[1];
349 spare_out[2] = buf.f_spare[2];
350 spare_out[3] = buf.f_spare[3];
351 spare_out[4] = buf.f_spare[4];
352 spare_out[5] = buf.f_spare[5];
357 * Overrides for Emacs so that we follow Linus's tabbing style.
358 * Emacs will notice this stuff at the end of the file and automatically
359 * adjust the settings for this buffer only. This must remain at the end
361 * ---------------------------------------------------------------------------
363 * c-file-style: "linux"