[deliverable/linux.git] / fs / hostfs / hostfs_user.c

/*
 * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
 * Licensed under the GPL
 */

#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>
#include <utime.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/vfs.h>
#include "hostfs.h"
#include "kern_util.h"
#include "user.h"

int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
	      int *nlink_out, int *uid_out, int *gid_out,
	      unsigned long long *size_out, struct timespec *atime_out,
	      struct timespec *mtime_out, struct timespec *ctime_out,
	      int *blksize_out, unsigned long long *blocks_out, int fd)
{
	struct stat64 buf;

	if(fd >= 0) {
		if (fstat64(fd, &buf) < 0)
			return(-errno);
	} else if(lstat64(path, &buf) < 0) {
		return(-errno);
	}

	if(inode_out != NULL) *inode_out = buf.st_ino;
	if(mode_out != NULL) *mode_out = buf.st_mode;
	if(nlink_out != NULL) *nlink_out = buf.st_nlink;
	if(uid_out != NULL) *uid_out = buf.st_uid;
	if(gid_out != NULL) *gid_out = buf.st_gid;
	if(size_out != NULL) *size_out = buf.st_size;
	if(atime_out != NULL) {
		atime_out->tv_sec = buf.st_atime;
		atime_out->tv_nsec = 0;
	}
	if(mtime_out != NULL) {
		mtime_out->tv_sec = buf.st_mtime;
		mtime_out->tv_nsec = 0;
	}
	if(ctime_out != NULL) {
		ctime_out->tv_sec = buf.st_ctime;
		ctime_out->tv_nsec = 0;
	}
	if(blksize_out != NULL) *blksize_out = buf.st_blksize;
	if(blocks_out != NULL) *blocks_out = buf.st_blocks;
	return(0);
}

int file_type(const char *path, int *maj, int *min)
{
 	struct stat64 buf;

	if(lstat64(path, &buf) < 0)
		return(-errno);
	/*We cannot pass rdev as is because glibc and the kernel disagree
	 *about its definition.*/
	if(maj != NULL)
		*maj = major(buf.st_rdev);
	if(min != NULL)
		*min = minor(buf.st_rdev);

	if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR);
	else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK);
	else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV);
	else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV);
	else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO);
	else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK);
	else return(OS_TYPE_FILE);
}

int access_file(char *path, int r, int w, int x)
{
	int mode = 0;

	if(r) mode = R_OK;
	if(w) mode |= W_OK;
	if(x) mode |= X_OK;
	if(access(path, mode) != 0) return(-errno);
	else return(0);
}

int open_file(char *path, int r, int w, int append)
{
	int mode = 0, fd;

	if(r && !w)
		mode = O_RDONLY;
	else if(!r && w)
		mode = O_WRONLY;
	else if(r && w)
		mode = O_RDWR;
	else panic("Impossible mode in open_file");

	if(append)
		mode |= O_APPEND;
	fd = open64(path, mode);
	if(fd < 0) return(-errno);
	else return(fd);
}

void *open_dir(char *path, int *err_out)
{
	DIR *dir;

	dir = opendir(path);
	*err_out = errno;
	if(dir == NULL) return(NULL);
	return(dir);
}

char *read_dir(void *stream, unsigned long long *pos,
	       unsigned long long *ino_out, int *len_out)
{
	DIR *dir = stream;
	struct dirent *ent;

	seekdir(dir, *pos);
	ent = readdir(dir);
	if(ent == NULL) return(NULL);
	*len_out = strlen(ent->d_name);
	*ino_out = ent->d_ino;
	*pos = telldir(dir);
	return(ent->d_name);
}

int read_file(int fd, unsigned long long *offset, char *buf, int len)
{
	int n;

	n = pread64(fd, buf, len, *offset);
	if(n < 0) return(-errno);
	*offset += n;
	return(n);
}

int write_file(int fd, unsigned long long *offset, const char *buf, int len)
{
	int n;

	n = pwrite64(fd, buf, len, *offset);
	if(n < 0) return(-errno);
	*offset += n;
	return(n);
}

int lseek_file(int fd, long long offset, int whence)
{
	int ret;

	ret = lseek64(fd, offset, whence);
	if(ret < 0)
		return(-errno);
	return(0);
}

int fsync_file(int fd, int datasync)
{
	int ret;
	if (datasync)
		ret = fdatasync(fd);
	else
		ret = fsync(fd);

	if (ret < 0)
		return -errno;
	return 0;
}

void close_file(void *stream)
{
	close(*((int *) stream));
}

void close_dir(void *stream)
{
	closedir(stream);
}

int file_create(char *name, int ur, int uw, int ux, int gr,
		int gw, int gx, int or, int ow, int ox)
{
	int mode, fd;

	mode = 0;
	mode |= ur ? S_IRUSR : 0;
	mode |= uw ? S_IWUSR : 0;
	mode |= ux ? S_IXUSR : 0;
	mode |= gr ? S_IRGRP : 0;
	mode |= gw ? S_IWGRP : 0;
	mode |= gx ? S_IXGRP : 0;
	mode |= or ? S_IROTH : 0;
	mode |= ow ? S_IWOTH : 0;
	mode |= ox ? S_IXOTH : 0;
	fd = open64(name, O_CREAT | O_RDWR, mode);
	if(fd < 0)
		return(-errno);
	return(fd);
}

int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
{
	struct timeval times[2];
	struct timespec atime_ts, mtime_ts;
	int err, ma;

	if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
		if (fd >= 0) {
			if (fchmod(fd, attrs->ia_mode) != 0)
				return (-errno);
		} else if (chmod(file, attrs->ia_mode) != 0) {
			return (-errno);
		}
	}
	if (attrs->ia_valid & HOSTFS_ATTR_UID) {
		if (fd >= 0) {
			if (fchown(fd, attrs->ia_uid, -1))
				return (-errno);
		} else if(chown(file, attrs->ia_uid, -1)) {
			return (-errno);
		}
	}
	if (attrs->ia_valid & HOSTFS_ATTR_GID) {
		if (fd >= 0) {
			if (fchown(fd, -1, attrs->ia_gid))
				return (-errno);
		} else if (chown(file, -1, attrs->ia_gid)) {
			return (-errno);
		}
	}
	if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
		if (fd >= 0) {
			if (ftruncate(fd, attrs->ia_size))
				return (-errno);
		} else if (truncate(file, attrs->ia_size)) {
			return (-errno);
		}
	}

	/* Update accessed and/or modified time, in two parts: first set
	 * times according to the changes to perform, and then call futimes()
	 * or utimes() to apply them. */
	ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
	if (attrs->ia_valid & ma) {
		err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
				&atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
		if (err != 0)
			return err;

		times[0].tv_sec = atime_ts.tv_sec;
		times[0].tv_usec = atime_ts.tv_nsec * 1000;
		times[1].tv_sec = mtime_ts.tv_sec;
		times[1].tv_usec = mtime_ts.tv_nsec * 1000;

		if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
			times[0].tv_sec = attrs->ia_atime.tv_sec;
			times[0].tv_usec = attrs->ia_atime.tv_nsec * 1000;
		}
		if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
			times[1].tv_sec = attrs->ia_mtime.tv_sec;
			times[1].tv_usec = attrs->ia_mtime.tv_nsec * 1000;
		}

		if (fd >= 0) {
			if (futimes(fd, times) != 0)
				return (-errno);
		} else if (utimes(file, times) != 0) {
			return (-errno);
		}
	}

	if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
	if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
		err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
				&attrs->ia_atime, &attrs->ia_mtime, NULL,
				NULL, NULL, fd);
		if(err != 0) return(err);
	}
	return(0);
}

int make_symlink(const char *from, const char *to)
{
	int err;

	err = symlink(to, from);
	if(err) return(-errno);
	return(0);
}

int unlink_file(const char *file)
{
	int err;

	err = unlink(file);
	if(err) return(-errno);
	return(0);
}

int do_mkdir(const char *file, int mode)
{
	int err;

	err = mkdir(file, mode);
	if(err) return(-errno);
	return(0);
}

int do_rmdir(const char *file)
{
	int err;

	err = rmdir(file);
	if(err) return(-errno);
	return(0);
}

int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
{
	int err;

	err = mknod(file, mode, makedev(major, minor));
	if(err) return(-errno);
	return(0);
}

int link_file(const char *to, const char *from)
{
	int err;

	err = link(to, from);
	if(err) return(-errno);
	return(0);
}

int do_readlink(char *file, char *buf, int size)
{
	int n;

	n = readlink(file, buf, size);
	if(n < 0)
		return(-errno);
	if(n < size)
		buf[n] = '\0';
	return(n);
}

int rename_file(char *from, char *to)
{
	int err;

	err = rename(from, to);
	if(err < 0) return(-errno);
	return(0);
}

int do_statfs(char *root, long *bsize_out, long long *blocks_out,
	      long long *bfree_out, long long *bavail_out,
	      long long *files_out, long long *ffree_out,
	      void *fsid_out, int fsid_size, long *namelen_out,
	      long *spare_out)
{
	struct statfs64 buf;
	int err;

	err = statfs64(root, &buf);
	if(err < 0) return(-errno);
	*bsize_out = buf.f_bsize;
	*blocks_out = buf.f_blocks;
	*bfree_out = buf.f_bfree;
	*bavail_out = buf.f_bavail;
	*files_out = buf.f_files;
	*ffree_out = buf.f_ffree;
	memcpy(fsid_out, &buf.f_fsid,
	       sizeof(buf.f_fsid) > fsid_size ? fsid_size :
	       sizeof(buf.f_fsid));
	*namelen_out = buf.f_namelen;
	spare_out[0] = buf.f_spare[0];
	spare_out[1] = buf.f_spare[1];
	spare_out[2] = buf.f_spare[2];
	spare_out[3] = buf.f_spare[3];
	spare_out[4] = buf.f_spare[4];
	return(0);
}

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-file-style: "linux"
 * End:
 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
	3	* Licensed under the GPL
	4	*/
	5
	6	#include <unistd.h>
	7	#include <stdio.h>
	8	#include <fcntl.h>
	9	#include <dirent.h>
	10	#include <errno.h>
	11	#include <utime.h>
	12	#include <string.h>
	13	#include <sys/stat.h>
	14	#include <sys/time.h>
	15	#include <sys/vfs.h>
	16	#include "hostfs.h"
	17	#include "kern_util.h"
	18	#include "user.h"
	19
	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,
5822b7fa	24	int blksize_out, unsigned long long blocks_out, int fd)
1da177e4 LT	25	{
	26	struct stat64 buf;
	27
5822b7fa AB	28	if(fd >= 0) {
	29	if (fstat64(fd, &buf) < 0)
	30	return(-errno);
	31	} else if(lstat64(path, &buf) < 0) {
1da177e4	32	return(-errno);
5822b7fa	33	}
1da177e4 LT	34
	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;
	44	}
	45	if(mtime_out != NULL) {
	46	mtime_out->tv_sec = buf.st_mtime;
	47	mtime_out->tv_nsec = 0;
	48	}
	49	if(ctime_out != NULL) {
	50	ctime_out->tv_sec = buf.st_ctime;
	51	ctime_out->tv_nsec = 0;
	52	}
	53	if(blksize_out != NULL) *blksize_out = buf.st_blksize;
	54	if(blocks_out != NULL) *blocks_out = buf.st_blocks;
	55	return(0);
	56	}
	57
	58	int file_type(const char path, int maj, int *min)
	59	{
	60	struct stat64 buf;
	61
	62	if(lstat64(path, &buf) < 0)
	63	return(-errno);
	64	/*We cannot pass rdev as is because glibc and the kernel disagree
	65	about its definition./
	66	if(maj != NULL)
	67	*maj = major(buf.st_rdev);
	68	if(min != NULL)
	69	*min = minor(buf.st_rdev);
	70
	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);
	78	}
	79
	80	int access_file(char *path, int r, int w, int x)
	81	{
	82	int mode = 0;
	83
	84	if(r) mode = R_OK;
	85	if(w) mode \|= W_OK;
	86	if(x) mode \|= X_OK;
	87	if(access(path, mode) != 0) return(-errno);
	88	else return(0);
	89	}
	90
	91	int open_file(char *path, int r, int w, int append)
	92	{
	93	int mode = 0, fd;
	94
	95	if(r && !w)
	96	mode = O_RDONLY;
	97	else if(!r && w)
98	mode = O_WRONLY;
99	else if(r && w)
100	mode = O_RDWR;
101	else panic("Impossible mode in open_file");
102
103	if(append)
104	mode \|= O_APPEND;
105	fd = open64(path, mode);
106	if(fd < 0) return(-errno);
107	else return(fd);
108	}
109
110	void open_dir(char path, int *err_out)
111	{
112	DIR *dir;
113
114	dir = opendir(path);
115	*err_out = errno;
116	if(dir == NULL) return(NULL);
117	return(dir);
118	}
119
120	char read_dir(void stream, unsigned long long *pos,
121	unsigned long long ino_out, int len_out)
122	{
123	DIR *dir = stream;
124	struct dirent *ent;
125
126	seekdir(dir, *pos);
127	ent = readdir(dir);
128	if(ent == NULL) return(NULL);
129	*len_out = strlen(ent->d_name);
130	*ino_out = ent->d_ino;
131	*pos = telldir(dir);
132	return(ent->d_name);
133	}
134
135	int read_file(int fd, unsigned long long offset, char buf, int len)
136	{
137	int n;
138
139	n = pread64(fd, buf, len, *offset);
140	if(n < 0) return(-errno);
141	*offset += n;
142	return(n);
143	}
144
145	int write_file(int fd, unsigned long long offset, const char buf, int len)
146	{
147	int n;
148
149	n = pwrite64(fd, buf, len, *offset);
150	if(n < 0) return(-errno);
151	*offset += n;
152	return(n);
153	}
154
155	int lseek_file(int fd, long long offset, int whence)
156	{
157	int ret;
158
159	ret = lseek64(fd, offset, whence);
a2d76bd8 PBG	160	if(ret < 0)
a2d76bd8 PBG	161	return(-errno);
1da177e4 LT	162	return(0);
	163	}
	164
a2d76bd8 PBG	165	int fsync_file(int fd, int datasync)
	166	{
	167	int ret;
	168	if (datasync)
	169	ret = fdatasync(fd);
	170	else
	171	ret = fsync(fd);
	172
	173	if (ret < 0)
	174	return -errno;
	175	return 0;
	176	}
	177
1da177e4 LT	178	void close_file(void *stream)
	179	{
	180	close(((int ) stream));
	181	}
	182
	183	void close_dir(void *stream)
	184	{
	185	closedir(stream);
	186	}
	187
	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)
	190	{
	191	int mode, fd;
	192
	193	mode = 0;
	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);
	204	if(fd < 0)
	205	return(-errno);
	206	return(fd);
	207	}
	208
5822b7fa	209	int set_attr(const char file, struct hostfs_iattr attrs, int fd)
1da177e4	210	{
5822b7fa AB	211	struct timeval times[2];
5822b7fa AB	212	struct timespec atime_ts, mtime_ts;
1da177e4 LT	213	int err, ma;
1da177e4 LT	214
5822b7fa AB	215	if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
	216	if (fd >= 0) {
	217	if (fchmod(fd, attrs->ia_mode) != 0)
	218	return (-errno);
	219	} else if (chmod(file, attrs->ia_mode) != 0) {
	220	return (-errno);
	221	}
1da177e4	222	}
5822b7fa AB	223	if (attrs->ia_valid & HOSTFS_ATTR_UID) {
	224	if (fd >= 0) {
	225	if (fchown(fd, attrs->ia_uid, -1))
	226	return (-errno);
	227	} else if(chown(file, attrs->ia_uid, -1)) {
	228	return (-errno);
	229	}
1da177e4	230	}
5822b7fa AB	231	if (attrs->ia_valid & HOSTFS_ATTR_GID) {
	232	if (fd >= 0) {
	233	if (fchown(fd, -1, attrs->ia_gid))
	234	return (-errno);
	235	} else if (chown(file, -1, attrs->ia_gid)) {
	236	return (-errno);
	237	}
1da177e4	238	}
5822b7fa AB	239	if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
	240	if (fd >= 0) {
	241	if (ftruncate(fd, attrs->ia_size))
	242	return (-errno);
	243	} else if (truncate(file, attrs->ia_size)) {
	244	return (-errno);
	245	}
1da177e4	246	}
5822b7fa AB	247
	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);
	255	if (err != 0)
	256	return err;
	257
	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;
	262
	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;
1da177e4	266	}
5822b7fa AB	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;
	270	}
	271
	272	if (fd >= 0) {
	273	if (futimes(fd, times) != 0)
	274	return (-errno);
	275	} else if (utimes(file, times) != 0) {
	276	return (-errno);
1da177e4 LT	277	}
1da177e4 LT	278	}
5822b7fa	279
1da177e4 LT	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,
5822b7fa	284	NULL, NULL, fd);
1da177e4 LT	285	if(err != 0) return(err);
	286	}
	287	return(0);
	288	}
	289
	290	int make_symlink(const char from, const char to)
	291	{
	292	int err;
	293
	294	err = symlink(to, from);
	295	if(err) return(-errno);
	296	return(0);
	297	}
	298
	299	int unlink_file(const char *file)
	300	{
	301	int err;
	302
	303	err = unlink(file);
	304	if(err) return(-errno);
	305	return(0);
	306	}
	307
	308	int do_mkdir(const char *file, int mode)
	309	{
	310	int err;
	311
	312	err = mkdir(file, mode);
	313	if(err) return(-errno);
	314	return(0);
	315	}
	316
	317	int do_rmdir(const char *file)
	318	{
	319	int err;
	320
	321	err = rmdir(file);
	322	if(err) return(-errno);
	323	return(0);
	324	}
	325
88f6cd0c	326	int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
1da177e4 LT	327	{
	328	int err;
	329
88f6cd0c	330	err = mknod(file, mode, makedev(major, minor));
1da177e4 LT	331	if(err) return(-errno);
	332	return(0);
	333	}
	334
	335	int link_file(const char to, const char from)
	336	{
	337	int err;
	338
	339	err = link(to, from);
	340	if(err) return(-errno);
	341	return(0);
	342	}
	343
	344	int do_readlink(char file, char buf, int size)
	345	{
	346	int n;
	347
	348	n = readlink(file, buf, size);
	349	if(n < 0)
	350	return(-errno);
	351	if(n < size)
	352	buf[n] = '\0';
	353	return(n);
	354	}
	355
	356	int rename_file(char from, char to)
	357	{
	358	int err;
	359
	360	err = rename(from, to);
	361	if(err < 0) return(-errno);
	362	return(0);
	363	}
	364
	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,
	369	long *spare_out)
	370	{
	371	struct statfs64 buf;
	372	int err;
	373
	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 :
	384	sizeof(buf.f_fsid));
	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];
1da177e4 LT	391	return(0);
	392	}
	393
	394	/*
	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
	398	* of the file.
	399	* ---------------------------------------------------------------------------
	400	* Local variables:
	401	* c-file-style: "linux"
	402	* End:
	403	*/