[linux-2.6-block.git] / fs / hostfs / hostfs_user.c

/*
 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

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

static void stat64_to_hostfs(const struct stat64 *buf, struct hostfs_stat *p)
{
	p->ino = buf->st_ino;
	p->mode = buf->st_mode;
	p->nlink = buf->st_nlink;
	p->uid = buf->st_uid;
	p->gid = buf->st_gid;
	p->size = buf->st_size;
	p->atime.tv_sec = buf->st_atime;
	p->atime.tv_nsec = 0;
	p->ctime.tv_sec = buf->st_ctime;
	p->ctime.tv_nsec = 0;
	p->mtime.tv_sec = buf->st_mtime;
	p->mtime.tv_nsec = 0;
	p->blksize = buf->st_blksize;
	p->blocks = buf->st_blocks;
	p->maj = os_major(buf->st_rdev);
	p->min = os_minor(buf->st_rdev);
	p->dev = buf->st_dev;
}

int stat_file(const char *path, struct hostfs_stat *p, int fd)
{
	struct stat64 buf;

	if (fd >= 0) {
		if (fstat64(fd, &buf) < 0)
			return -errno;
	} else if (lstat64(path, &buf) < 0) {
		return -errno;
	}
	stat64_to_hostfs(&buf, p);
	return 0;
}

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;

	return dir;
}

void seek_dir(void *stream, unsigned long long pos)
{
	DIR *dir = stream;

	seekdir(dir, pos);
}

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

	ent = readdir(dir);
	if (ent == NULL)
		return NULL;
	*len_out = strlen(ent->d_name);
	*ino_out = ent->d_ino;
	*type_out = ent->d_type;
	*pos_out = ent->d_off;
	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;
}

int replace_file(int oldfd, int fd)
{
	return dup2(oldfd, fd);
}

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

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

int file_create(char *name, int mode)
{
	int fd;

	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 hostfs_stat st;
	struct timeval times[2];
	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, &st, fd);
		if (err != 0)
			return err;

		times[0].tv_sec = st.atime.tv_sec;
		times[0].tv_usec = st.atime.tv_nsec / 1000;
		times[1].tv_sec = st.mtime.tv_sec;
		times[1].tv_usec = st.mtime.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;
		}
	}

	/* Note: ctime is not handled */
	if (attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)) {
		err = stat_file(file, &st, fd);
		attrs->ia_atime = st.atime;
		attrs->ia_mtime = st.mtime;
		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 hostfs_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, os_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 hostfs_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 rename2_file(char *from, char *to, unsigned int flags)
{
	int err;

#ifndef SYS_renameat2
#  ifdef __x86_64__
#    define SYS_renameat2 316
#  endif
#  ifdef __i386__
#    define SYS_renameat2 353
#  endif
#endif

#ifdef SYS_renameat2
	err = syscall(SYS_renameat2, AT_FDCWD, from, AT_FDCWD, to, flags);
	if (err < 0) {
		if (errno != ENOSYS)
			return -errno;
		else
			return -EINVAL;
	}
	return 0;
#else
	return -EINVAL;
#endif
}

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)
{
	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;

	return 0;
}
Commit	Line	Data
1da177e4	1	/*
f1adc05e	2	* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
1da177e4 LT	3	* Licensed under the GPL
	4	*/
	5
1da177e4	6	#include <stdio.h>
84b3db04 JD	7	#include <stddef.h>
84b3db04 JD	8	#include <unistd.h>
1da177e4 LT	9	#include <dirent.h>
1da177e4 LT	10	#include <errno.h>
84b3db04	11	#include <fcntl.h>
1da177e4 LT	12	#include <string.h>
	13	#include <sys/stat.h>
	14	#include <sys/time.h>
84b3db04	15	#include <sys/types.h>
1da177e4	16	#include <sys/vfs.h>
9a423bb6	17	#include <sys/syscall.h>
1da177e4	18	#include "hostfs.h"
84b3db04	19	#include <utime.h>
1da177e4	20
39b743c6 AV	21	static void stat64_to_hostfs(const struct stat64 buf, struct hostfs_stat p)
	22	{
	23	p->ino = buf->st_ino;
	24	p->mode = buf->st_mode;
	25	p->nlink = buf->st_nlink;
	26	p->uid = buf->st_uid;
	27	p->gid = buf->st_gid;
	28	p->size = buf->st_size;
	29	p->atime.tv_sec = buf->st_atime;
	30	p->atime.tv_nsec = 0;
	31	p->ctime.tv_sec = buf->st_ctime;
	32	p->ctime.tv_nsec = 0;
	33	p->mtime.tv_sec = buf->st_mtime;
	34	p->mtime.tv_nsec = 0;
	35	p->blksize = buf->st_blksize;
	36	p->blocks = buf->st_blocks;
	37	p->maj = os_major(buf->st_rdev);
	38	p->min = os_minor(buf->st_rdev);
74ce793b	39	p->dev = buf->st_dev;
39b743c6 AV	40	}
	41
	42	int stat_file(const char path, struct hostfs_stat p, int fd)
1da177e4 LT	43	{
	44	struct stat64 buf;
	45
84b3db04	46	if (fd >= 0) {
5822b7fa	47	if (fstat64(fd, &buf) < 0)
f1adc05e	48	return -errno;
84b3db04	49	} else if (lstat64(path, &buf) < 0) {
f1adc05e	50	return -errno;
5822b7fa	51	}
39b743c6	52	stat64_to_hostfs(&buf, p);
f1adc05e	53	return 0;
1da177e4 LT	54	}
1da177e4 LT	55
1da177e4 LT	56	int access_file(char *path, int r, int w, int x)
	57	{
	58	int mode = 0;
	59
84b3db04 JD	60	if (r)
	61	mode = R_OK;
	62	if (w)
	63	mode \|= W_OK;
	64	if (x)
	65	mode \|= X_OK;
	66	if (access(path, mode) != 0)
f1adc05e JD	67	return -errno;
f1adc05e JD	68	else return 0;
1da177e4 LT	69	}
	70
	71	int open_file(char *path, int r, int w, int append)
	72	{
	73	int mode = 0, fd;
	74
84b3db04	75	if (r && !w)
1da177e4	76	mode = O_RDONLY;
84b3db04	77	else if (!r && w)
1da177e4	78	mode = O_WRONLY;
84b3db04	79	else if (r && w)
1da177e4 LT	80	mode = O_RDWR;
	81	else panic("Impossible mode in open_file");
	82
84b3db04	83	if (append)
1da177e4 LT	84	mode \|= O_APPEND;
1da177e4 LT	85	fd = open64(path, mode);
84b3db04	86	if (fd < 0)
f1adc05e JD	87	return -errno;
f1adc05e JD	88	else return fd;
1da177e4 LT	89	}
	90
	91	void open_dir(char path, int *err_out)
	92	{
	93	DIR *dir;
	94
	95	dir = opendir(path);
	96	*err_out = errno;
c5c6dd4e	97
f1adc05e	98	return dir;
1da177e4 LT	99	}
1da177e4 LT	100
0c9bd636 RW	101	void seek_dir(void *stream, unsigned long long pos)
	102	{
	103	DIR *dir = stream;
	104
	105	seekdir(dir, pos);
	106	}
	107
	108	char read_dir(void stream, unsigned long long *pos_out,
3ee6bd8e GU	109	unsigned long long ino_out, int len_out,
3ee6bd8e GU	110	unsigned int *type_out)
1da177e4 LT	111	{
	112	DIR *dir = stream;
	113	struct dirent *ent;
	114
1da177e4	115	ent = readdir(dir);
84b3db04	116	if (ent == NULL)
f1adc05e	117	return NULL;
1da177e4 LT	118	*len_out = strlen(ent->d_name);
1da177e4 LT	119	*ino_out = ent->d_ino;
3ee6bd8e	120	*type_out = ent->d_type;
0c9bd636	121	*pos_out = ent->d_off;
f1adc05e	122	return ent->d_name;
1da177e4 LT	123	}
	124
	125	int read_file(int fd, unsigned long long offset, char buf, int len)
	126	{
	127	int n;
	128
	129	n = pread64(fd, buf, len, *offset);
84b3db04	130	if (n < 0)
f1adc05e	131	return -errno;
1da177e4	132	*offset += n;
f1adc05e	133	return n;
1da177e4 LT	134	}
	135
	136	int write_file(int fd, unsigned long long offset, const char buf, int len)
	137	{
	138	int n;
	139
	140	n = pwrite64(fd, buf, len, *offset);
84b3db04	141	if (n < 0)
f1adc05e	142	return -errno;
1da177e4	143	*offset += n;
f1adc05e	144	return n;
1da177e4 LT	145	}
	146
	147	int lseek_file(int fd, long long offset, int whence)
	148	{
	149	int ret;
	150
	151	ret = lseek64(fd, offset, whence);
84b3db04	152	if (ret < 0)
f1adc05e JD	153	return -errno;
f1adc05e JD	154	return 0;
1da177e4 LT	155	}
1da177e4 LT	156
a2d76bd8 PBG	157	int fsync_file(int fd, int datasync)
	158	{
	159	int ret;
	160	if (datasync)
	161	ret = fdatasync(fd);
	162	else
	163	ret = fsync(fd);
	164
	165	if (ret < 0)
	166	return -errno;
	167	return 0;
	168	}
	169
f8ad850f AV	170	int replace_file(int oldfd, int fd)
	171	{
	172	return dup2(oldfd, fd);
	173	}
	174
1da177e4 LT	175	void close_file(void *stream)
	176	{
	177	close(((int ) stream));
	178	}
	179
	180	void close_dir(void *stream)
	181	{
	182	closedir(stream);
	183	}
	184
b98b9102	185	int file_create(char *name, int mode)
1da177e4	186	{
b98b9102 RW	187	int fd;
b98b9102 RW	188
1da177e4	189	fd = open64(name, O_CREAT \| O_RDWR, mode);
84b3db04	190	if (fd < 0)
f1adc05e JD	191	return -errno;
f1adc05e JD	192	return fd;
1da177e4 LT	193	}
1da177e4 LT	194
5822b7fa	195	int set_attr(const char file, struct hostfs_iattr attrs, int fd)
1da177e4	196	{
39b743c6	197	struct hostfs_stat st;
5822b7fa	198	struct timeval times[2];
1da177e4 LT	199	int err, ma;
1da177e4 LT	200
5822b7fa AB	201	if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
	202	if (fd >= 0) {
	203	if (fchmod(fd, attrs->ia_mode) != 0)
c5c6dd4e	204	return -errno;
5822b7fa	205	} else if (chmod(file, attrs->ia_mode) != 0) {
f1adc05e	206	return -errno;
5822b7fa	207	}
1da177e4	208	}
5822b7fa AB	209	if (attrs->ia_valid & HOSTFS_ATTR_UID) {
	210	if (fd >= 0) {
	211	if (fchown(fd, attrs->ia_uid, -1))
f1adc05e	212	return -errno;
84b3db04	213	} else if (chown(file, attrs->ia_uid, -1)) {
f1adc05e	214	return -errno;
5822b7fa	215	}
1da177e4	216	}
5822b7fa AB	217	if (attrs->ia_valid & HOSTFS_ATTR_GID) {
	218	if (fd >= 0) {
	219	if (fchown(fd, -1, attrs->ia_gid))
f1adc05e	220	return -errno;
5822b7fa	221	} else if (chown(file, -1, attrs->ia_gid)) {
f1adc05e	222	return -errno;
5822b7fa	223	}
1da177e4	224	}
5822b7fa AB	225	if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
	226	if (fd >= 0) {
	227	if (ftruncate(fd, attrs->ia_size))
f1adc05e	228	return -errno;
5822b7fa	229	} else if (truncate(file, attrs->ia_size)) {
f1adc05e	230	return -errno;
5822b7fa	231	}
1da177e4	232	}
5822b7fa	233
84b3db04 JD	234	/*
84b3db04 JD	235	* Update accessed and/or modified time, in two parts: first set
5822b7fa	236	* times according to the changes to perform, and then call futimes()
84b3db04 JD	237	* or utimes() to apply them.
84b3db04 JD	238	*/
5822b7fa AB	239	ma = (HOSTFS_ATTR_ATIME_SET \| HOSTFS_ATTR_MTIME_SET);
5822b7fa AB	240	if (attrs->ia_valid & ma) {
39b743c6	241	err = stat_file(file, &st, fd);
5822b7fa AB	242	if (err != 0)
	243	return err;
	244
39b743c6 AV	245	times[0].tv_sec = st.atime.tv_sec;
	246	times[0].tv_usec = st.atime.tv_nsec / 1000;
	247	times[1].tv_sec = st.mtime.tv_sec;
	248	times[1].tv_usec = st.mtime.tv_nsec / 1000;
5822b7fa AB	249
	250	if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
	251	times[0].tv_sec = attrs->ia_atime.tv_sec;
d7b88513	252	times[0].tv_usec = attrs->ia_atime.tv_nsec / 1000;
1da177e4	253	}
5822b7fa AB	254	if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
5822b7fa AB	255	times[1].tv_sec = attrs->ia_mtime.tv_sec;
d7b88513	256	times[1].tv_usec = attrs->ia_mtime.tv_nsec / 1000;
5822b7fa AB	257	}
	258
	259	if (fd >= 0) {
	260	if (futimes(fd, times) != 0)
f1adc05e	261	return -errno;
5822b7fa	262	} else if (utimes(file, times) != 0) {
f1adc05e	263	return -errno;
1da177e4 LT	264	}
1da177e4 LT	265	}
5822b7fa	266
baabd156	267	/* Note: ctime is not handled */
84b3db04	268	if (attrs->ia_valid & (HOSTFS_ATTR_ATIME \| HOSTFS_ATTR_MTIME)) {
39b743c6 AV	269	err = stat_file(file, &st, fd);
	270	attrs->ia_atime = st.atime;
	271	attrs->ia_mtime = st.mtime;
84b3db04	272	if (err != 0)
f1adc05e	273	return err;
1da177e4	274	}
f1adc05e	275	return 0;
1da177e4 LT	276	}
	277
	278	int make_symlink(const char from, const char to)
	279	{
	280	int err;
	281
	282	err = symlink(to, from);
84b3db04	283	if (err)
f1adc05e JD	284	return -errno;
f1adc05e JD	285	return 0;
1da177e4 LT	286	}
	287
	288	int unlink_file(const char *file)
	289	{
	290	int err;
	291
	292	err = unlink(file);
84b3db04	293	if (err)
f1adc05e JD	294	return -errno;
f1adc05e JD	295	return 0;
1da177e4 LT	296	}
	297
	298	int do_mkdir(const char *file, int mode)
	299	{
	300	int err;
	301
	302	err = mkdir(file, mode);
84b3db04	303	if (err)
f1adc05e JD	304	return -errno;
f1adc05e JD	305	return 0;
1da177e4 LT	306	}
1da177e4 LT	307
6380161c	308	int hostfs_do_rmdir(const char *file)
1da177e4 LT	309	{
	310	int err;
	311
	312	err = rmdir(file);
84b3db04	313	if (err)
f1adc05e JD	314	return -errno;
f1adc05e JD	315	return 0;
1da177e4 LT	316	}
1da177e4 LT	317
88f6cd0c	318	int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
1da177e4 LT	319	{
	320	int err;
	321
005a59ec	322	err = mknod(file, mode, os_makedev(major, minor));
84b3db04	323	if (err)
f1adc05e JD	324	return -errno;
f1adc05e JD	325	return 0;
1da177e4 LT	326	}
	327
	328	int link_file(const char to, const char from)
	329	{
	330	int err;
	331
	332	err = link(to, from);
84b3db04	333	if (err)
f1adc05e JD	334	return -errno;
f1adc05e JD	335	return 0;
1da177e4 LT	336	}
1da177e4 LT	337
ea7e743e	338	int hostfs_do_readlink(char file, char buf, int size)
1da177e4 LT	339	{
	340	int n;
	341
	342	n = readlink(file, buf, size);
84b3db04	343	if (n < 0)
f1adc05e	344	return -errno;
84b3db04	345	if (n < size)
1da177e4	346	buf[n] = '\0';
f1adc05e	347	return n;
1da177e4 LT	348	}
	349
	350	int rename_file(char from, char to)
	351	{
	352	int err;
	353
	354	err = rename(from, to);
84b3db04	355	if (err < 0)
f1adc05e JD	356	return -errno;
f1adc05e JD	357	return 0;
1da177e4 LT	358	}
1da177e4 LT	359
9a423bb6 MS	360	int rename2_file(char from, char to, unsigned int flags)
	361	{
	362	int err;
	363
	364	#ifndef SYS_renameat2
	365	# ifdef __x86_64__
	366	# define SYS_renameat2 316
	367	# endif
	368	# ifdef __i386__
	369	# define SYS_renameat2 353
	370	# endif
	371	#endif
	372
	373	#ifdef SYS_renameat2
	374	err = syscall(SYS_renameat2, AT_FDCWD, from, AT_FDCWD, to, flags);
	375	if (err < 0) {
	376	if (errno != ENOSYS)
	377	return -errno;
	378	else
	379	return -EINVAL;
	380	}
	381	return 0;
	382	#else
	383	return -EINVAL;
	384	#endif
	385	}
	386
1da177e4 LT	387	int do_statfs(char root, long bsize_out, long long *blocks_out,
	388	long long bfree_out, long long bavail_out,
	389	long long files_out, long long ffree_out,
1b627d57	390	void fsid_out, int fsid_size, long namelen_out)
1da177e4 LT	391	{
	392	struct statfs64 buf;
	393	int err;
	394
	395	err = statfs64(root, &buf);
84b3db04	396	if (err < 0)
f1adc05e JD	397	return -errno;
f1adc05e JD	398
1da177e4 LT	399	*bsize_out = buf.f_bsize;
	400	*blocks_out = buf.f_blocks;
	401	*bfree_out = buf.f_bfree;
	402	*bavail_out = buf.f_bavail;
	403	*files_out = buf.f_files;
	404	*ffree_out = buf.f_ffree;
	405	memcpy(fsid_out, &buf.f_fsid,
	406	sizeof(buf.f_fsid) > fsid_size ? fsid_size :
	407	sizeof(buf.f_fsid));
	408	*namelen_out = buf.f_namelen;
1b627d57	409
f1adc05e	410	return 0;
1da177e4	411	}