--- /dev/null
+/*
+ * 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)
+{
+ struct stat64 buf;
+
+ if(lstat64(path, &buf) < 0)
+ return(-errno);
+
+ /* See the Makefile for why STAT64_INO_FIELD is passed in
+ * by the build
+ */
+ if(inode_out != NULL) *inode_out = buf.STAT64_INO_FIELD;
+ 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 *rdev)
+{
+ struct stat64 buf;
+
+ if(lstat64(path, &buf) < 0)
+ return(-errno);
+ if(rdev != NULL)
+ *rdev = 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);
+}
+
+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)
+{
+ struct utimbuf buf;
+ int err, ma;
+
+ if(attrs->ia_valid & HOSTFS_ATTR_MODE){
+ if(chmod(file, attrs->ia_mode) != 0) return(-errno);
+ }
+ if(attrs->ia_valid & HOSTFS_ATTR_UID){
+ if(chown(file, attrs->ia_uid, -1)) return(-errno);
+ }
+ if(attrs->ia_valid & HOSTFS_ATTR_GID){
+ if(chown(file, -1, attrs->ia_gid)) return(-errno);
+ }
+ if(attrs->ia_valid & HOSTFS_ATTR_SIZE){
+ if(truncate(file, attrs->ia_size)) return(-errno);
+ }
+ ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET;
+ if((attrs->ia_valid & ma) == ma){
+ buf.actime = attrs->ia_atime.tv_sec;
+ buf.modtime = attrs->ia_mtime.tv_sec;
+ if(utime(file, &buf) != 0) return(-errno);
+ }
+ else {
+ struct timespec ts;
+
+ if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){
+ err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, &ts, NULL, NULL, NULL);
+ if(err != 0)
+ return(err);
+ buf.actime = attrs->ia_atime.tv_sec;
+ buf.modtime = ts.tv_sec;
+ if(utime(file, &buf) != 0)
+ return(-errno);
+ }
+ if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){
+ err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
+ NULL, &ts, NULL, NULL, NULL, NULL);
+ if(err != 0)
+ return(err);
+ buf.actime = ts.tv_sec;
+ buf.modtime = attrs->ia_mtime.tv_sec;
+ if(utime(file, &buf) != 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);
+ 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, int dev)
+{
+ int err;
+
+ err = mknod(file, mode, dev);
+ 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];
+ spare_out[5] = buf.f_spare[5];
+ 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:
+ */
git://git.onelab.eu / linux-2.6.git / blobdiff