diff options
Diffstat (limited to 'lib/modules/subdir.c')
| -rw-r--r-- | lib/modules/subdir.c | 913 |
1 files changed, 458 insertions, 455 deletions
diff --git a/lib/modules/subdir.c b/lib/modules/subdir.c index f22c023..6f7b187 100644 --- a/lib/modules/subdir.c +++ b/lib/modules/subdir.c @@ -1,9 +1,9 @@ /* - fuse subdir module: offset paths with a base directory - Copyright (C) 2007 Miklos Szeredi <miklos@szeredi.hu> + fuse subdir module: offset paths with a base directory + Copyright (C) 2007 Miklos Szeredi <miklos@szeredi.hu> - This program can be distributed under the terms of the GNU LGPLv2. - See the file COPYING.LIB + This program can be distributed under the terms of the GNU LGPLv2. + See the file COPYING.LIB */ #define FUSE_USE_VERSION 26 @@ -16,647 +16,650 @@ #include <errno.h> struct subdir { - char *base; - size_t baselen; - int rellinks; - struct fuse_fs *next; + char *base; + size_t baselen; + int rellinks; + struct fuse_fs *next; }; static struct subdir *subdir_get(void) { - return fuse_get_context()->private_data; + return fuse_get_context()->private_data; } static char *subdir_addpath(struct subdir *d, const char *path) { - unsigned newlen = d->baselen + strlen(path); - char *newpath = malloc(newlen + 2); - if (newpath) { - if (path[0] == '/') - path++; - strcpy(newpath, d->base); - strcpy(newpath + d->baselen, path); - if (!newpath[0]) - strcpy(newpath, "."); - } - return newpath; + unsigned newlen = d->baselen + strlen(path); + char *newpath = malloc(newlen + 2); + if (newpath) { + if (path[0] == '/') + path++; + strcpy(newpath, d->base); + strcpy(newpath + d->baselen, path); + if (!newpath[0]) + strcpy(newpath, "."); + } + return newpath; } static int subdir_getattr(const char *path, struct stat *stbuf) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_getattr(d->next, newpath, stbuf); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_getattr(d->next, newpath, stbuf); + free(newpath); + } + return err; } static int subdir_fgetattr(const char *path, struct stat *stbuf, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_fgetattr(d->next, newpath, stbuf, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_fgetattr(d->next, newpath, stbuf, fi); + free(newpath); + } + return err; } static int subdir_access(const char *path, int mask) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_access(d->next, newpath, mask); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_access(d->next, newpath, mask); + free(newpath); + } + return err; } static int count_components(const char *p) { - int ctr; + int ctr; - for (; *p == '/'; p++); - for (ctr = 0; *p; ctr++) { - for (; *p && *p != '/'; p++); - for (; *p == '/'; p++); - } - return ctr; + for (; *p == '/'; p++); + for (ctr = 0; *p; ctr++) { + for (; *p && *p != '/'; p++); + for (; *p == '/'; p++); + } + return ctr; } static void strip_common(const char **sp, const char **tp) { - const char *s = *sp; - const char *t = *tp; - do { - for (; *s == '/'; s++); - for (; *t == '/'; t++); - *tp = t; - *sp = s; - for (; *s == *t && *s && *s != '/'; s++, t++); - } while ((*s == *t && *s) || (!*s && *t == '/') || (*s == '/' && !*t)); + const char *s = *sp; + const char *t = *tp; + do { + for (; *s == '/'; s++); + for (; *t == '/'; t++); + *tp = t; + *sp = s; + for (; *s == *t && *s && *s != '/'; s++, t++); + } while ((*s == *t && *s) || (!*s && *t == '/') || (*s == '/' && !*t)); } static void transform_symlink(struct subdir *d, const char *path, - char *buf, size_t size) + char *buf, size_t size) { - const char *l = buf; - size_t llen; - char *s; - int dotdots; - int i; + const char *l = buf; + size_t llen; + char *s; + int dotdots; + int i; - if (l[0] != '/' || d->base[0] != '/') - return; + if (l[0] != '/' || d->base[0] != '/') + return; - strip_common(&l, &path); - if (l - buf < (long) d->baselen) - return; + strip_common(&l, &path); + if (l - buf < (long) d->baselen) + return; - dotdots = count_components(path); - if (!dotdots) - return; - dotdots--; + dotdots = count_components(path); + if (!dotdots) + return; + dotdots--; - llen = strlen(l); - if (dotdots * 3 + llen + 2 > size) - return; + llen = strlen(l); + if (dotdots * 3 + llen + 2 > size) + return; - s = buf + dotdots * 3; - if (llen) - memmove(s, l, llen + 1); - else if (!dotdots) - strcpy(s, "."); - else - *s = '\0'; + s = buf + dotdots * 3; + if (llen) + memmove(s, l, llen + 1); + else if (!dotdots) + strcpy(s, "."); + else + *s = '\0'; - for (s = buf, i = 0; i < dotdots; i++, s += 3) - memcpy(s, "../", 3); + for (s = buf, i = 0; i < dotdots; i++, s += 3) + memcpy(s, "../", 3); } static int subdir_readlink(const char *path, char *buf, size_t size) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_readlink(d->next, newpath, buf, size); - if (!err && d->rellinks) - transform_symlink(d, newpath, buf, size); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_readlink(d->next, newpath, buf, size); + if (!err && d->rellinks) + transform_symlink(d, newpath, buf, size); + free(newpath); + } + return err; } static int subdir_opendir(const char *path, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_opendir(d->next, newpath, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_opendir(d->next, newpath, fi); + free(newpath); + } + return err; } static int subdir_readdir(const char *path, void *buf, - fuse_fill_dir_t filler, off_t offset, - struct fuse_file_info *fi) + fuse_fill_dir_t filler, off_t offset, + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_readdir(d->next, newpath, buf, filler, offset, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_readdir(d->next, newpath, buf, filler, offset, + fi); + free(newpath); + } + return err; } static int subdir_releasedir(const char *path, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_releasedir(d->next, newpath, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_releasedir(d->next, newpath, fi); + free(newpath); + } + return err; } static int subdir_mknod(const char *path, mode_t mode, dev_t rdev) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_mknod(d->next, newpath, mode, rdev); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_mknod(d->next, newpath, mode, rdev); + free(newpath); + } + return err; } static int subdir_mkdir(const char *path, mode_t mode) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_mkdir(d->next, newpath, mode); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_mkdir(d->next, newpath, mode); + free(newpath); + } + return err; } static int subdir_unlink(const char *path) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_unlink(d->next, newpath); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_unlink(d->next, newpath); + free(newpath); + } + return err; } static int subdir_rmdir(const char *path) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_rmdir(d->next, newpath); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_rmdir(d->next, newpath); + free(newpath); + } + return err; } static int subdir_symlink(const char *from, const char *path) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_symlink(d->next, from, newpath); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_symlink(d->next, from, newpath); + free(newpath); + } + return err; } static int subdir_rename(const char *from, const char *to) { - struct subdir *d = subdir_get(); - char *newfrom = subdir_addpath(d, from); - char *newto = subdir_addpath(d, to); - int err = -ENOMEM; - if (newfrom && newto) - err = fuse_fs_rename(d->next, newfrom, newto); - free(newfrom); - free(newto); - return err; + struct subdir *d = subdir_get(); + char *newfrom = subdir_addpath(d, from); + char *newto = subdir_addpath(d, to); + int err = -ENOMEM; + if (newfrom && newto) + err = fuse_fs_rename(d->next, newfrom, newto); + free(newfrom); + free(newto); + return err; } static int subdir_link(const char *from, const char *to) { - struct subdir *d = subdir_get(); - char *newfrom = subdir_addpath(d, from); - char *newto = subdir_addpath(d, to); - int err = -ENOMEM; - if (newfrom && newto) - err = fuse_fs_link(d->next, newfrom, newto); - free(newfrom); - free(newto); - return err; + struct subdir *d = subdir_get(); + char *newfrom = subdir_addpath(d, from); + char *newto = subdir_addpath(d, to); + int err = -ENOMEM; + if (newfrom && newto) + err = fuse_fs_link(d->next, newfrom, newto); + free(newfrom); + free(newto); + return err; } static int subdir_chmod(const char *path, mode_t mode) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_chmod(d->next, newpath, mode); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_chmod(d->next, newpath, mode); + free(newpath); + } + return err; } static int subdir_chown(const char *path, uid_t uid, gid_t gid) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_chown(d->next, newpath, uid, gid); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_chown(d->next, newpath, uid, gid); + free(newpath); + } + return err; } static int subdir_truncate(const char *path, off_t size) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_truncate(d->next, newpath, size); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_truncate(d->next, newpath, size); + free(newpath); + } + return err; } static int subdir_ftruncate(const char *path, off_t size, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_ftruncate(d->next, newpath, size, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_ftruncate(d->next, newpath, size, fi); + free(newpath); + } + return err; } static int subdir_utimens(const char *path, const struct timespec ts[2]) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_utimens(d->next, newpath, ts); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_utimens(d->next, newpath, ts); + free(newpath); + } + return err; } -static int subdir_create(const char *path, mode_t mode, struct fuse_file_info *fi) +static int subdir_create(const char *path, mode_t mode, + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_create(d->next, newpath, mode, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_create(d->next, newpath, mode, fi); + free(newpath); + } + return err; } static int subdir_open(const char *path, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_open(d->next, newpath, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_open(d->next, newpath, fi); + free(newpath); + } + return err; } static int subdir_read(const char *path, char *buf, size_t size, off_t offset, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_read(d->next, newpath, buf, size, offset, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_read(d->next, newpath, buf, size, offset, fi); + free(newpath); + } + return err; } static int subdir_write(const char *path, const char *buf, size_t size, - off_t offset, struct fuse_file_info *fi) + off_t offset, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_write(d->next, newpath, buf, size, offset, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_write(d->next, newpath, buf, size, offset, fi); + free(newpath); + } + return err; } static int subdir_statfs(const char *path, struct statvfs *stbuf) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_statfs(d->next, newpath, stbuf); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_statfs(d->next, newpath, stbuf); + free(newpath); + } + return err; } static int subdir_flush(const char *path, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_flush(d->next, newpath, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_flush(d->next, newpath, fi); + free(newpath); + } + return err; } static int subdir_release(const char *path, struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_release(d->next, newpath, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_release(d->next, newpath, fi); + free(newpath); + } + return err; } static int subdir_fsync(const char *path, int isdatasync, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_fsync(d->next, newpath, isdatasync, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_fsync(d->next, newpath, isdatasync, fi); + free(newpath); + } + return err; } static int subdir_fsyncdir(const char *path, int isdatasync, - struct fuse_file_info *fi) + struct fuse_file_info *fi) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_fsyncdir(d->next, newpath, isdatasync, fi); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_fsyncdir(d->next, newpath, isdatasync, fi); + free(newpath); + } + return err; } -static int subdir_setxattr(const char *path, const char *name, const char *value, - size_t size, int flags) +static int subdir_setxattr(const char *path, const char *name, + const char *value, size_t size, int flags) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_setxattr(d->next, newpath, name, value, size, flags); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_setxattr(d->next, newpath, name, value, size, + flags); + free(newpath); + } + return err; } static int subdir_getxattr(const char *path, const char *name, char *value, - size_t size) + size_t size) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_getxattr(d->next, newpath, name, value, size); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_getxattr(d->next, newpath, name, value, size); + free(newpath); + } + return err; } static int subdir_listxattr(const char *path, char *list, size_t size) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_listxattr(d->next, newpath, list, size); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_listxattr(d->next, newpath, list, size); + free(newpath); + } + return err; } static int subdir_removexattr(const char *path, const char *name) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_removexattr(d->next, newpath, name); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_removexattr(d->next, newpath, name); + free(newpath); + } + return err; } static int subdir_lock(const char *path, struct fuse_file_info *fi, int cmd, - struct flock *lock) + struct flock *lock) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_lock(d->next, newpath, fi, cmd, lock); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_lock(d->next, newpath, fi, cmd, lock); + free(newpath); + } + return err; } static int subdir_bmap(const char *path, size_t blocksize, uint64_t *idx) { - struct subdir *d = subdir_get(); - char *newpath = subdir_addpath(d, path); - int err = -ENOMEM; - if (newpath) { - err = fuse_fs_bmap(d->next, newpath, blocksize, idx); - free(newpath); - } - return err; + struct subdir *d = subdir_get(); + char *newpath = subdir_addpath(d, path); + int err = -ENOMEM; + if (newpath) { + err = fuse_fs_bmap(d->next, newpath, blocksize, idx); + free(newpath); + } + return err; } static void *subdir_init(struct fuse_conn_info *conn) { - struct subdir *d = subdir_get(); - fuse_fs_init(d->next, conn); - return d; + struct subdir *d = subdir_get(); + fuse_fs_init(d->next, conn); + return d; } static void subdir_destroy(void *data) { - struct subdir *d = data; - fuse_fs_destroy(d->next); - free(d->base); - free(d); + struct subdir *d = data; + fuse_fs_destroy(d->next); + free(d->base); + free(d); } static struct fuse_operations subdir_oper = { - .destroy = subdir_destroy, - .init = subdir_init, - .getattr = subdir_getattr, - .fgetattr = subdir_fgetattr, - .access = subdir_access, - .readlink = subdir_readlink, - .opendir = subdir_opendir, - .readdir = subdir_readdir, - .releasedir = subdir_releasedir, - .mknod = subdir_mknod, - .mkdir = subdir_mkdir, - .symlink = subdir_symlink, - .unlink = subdir_unlink, - .rmdir = subdir_rmdir, - .rename = subdir_rename, - .link = subdir_link, - .chmod = subdir_chmod, - .chown = subdir_chown, - .truncate = subdir_truncate, - .ftruncate = subdir_ftruncate, - .utimens = subdir_utimens, - .create = subdir_create, - .open = subdir_open, - .read = subdir_read, - .write = subdir_write, - .statfs = subdir_statfs, - .flush = subdir_flush, - .release = subdir_release, - .fsync = subdir_fsync, - .fsyncdir = subdir_fsyncdir, - .setxattr = subdir_setxattr, - .getxattr = subdir_getxattr, - .listxattr = subdir_listxattr, - .removexattr= subdir_removexattr, - .lock = subdir_lock, - .bmap = subdir_bmap, + .destroy = subdir_destroy, + .init = subdir_init, + .getattr = subdir_getattr, + .fgetattr = subdir_fgetattr, + .access = subdir_access, + .readlink = subdir_readlink, + .opendir = subdir_opendir, + .readdir = subdir_readdir, + .releasedir = subdir_releasedir, + .mknod = subdir_mknod, + .mkdir = subdir_mkdir, + .symlink = subdir_symlink, + .unlink = subdir_unlink, + .rmdir = subdir_rmdir, + .rename = subdir_rename, + .link = subdir_link, + .chmod = subdir_chmod, + .chown = subdir_chown, + .truncate = subdir_truncate, + .ftruncate = subdir_ftruncate, + .utimens = subdir_utimens, + .create = subdir_create, + .open = subdir_open, + .read = subdir_read, + .write = subdir_write, + .statfs = subdir_statfs, + .flush = subdir_flush, + .release = subdir_release, + .fsync = subdir_fsync, + .fsyncdir = subdir_fsyncdir, + .setxattr = subdir_setxattr, + .getxattr = subdir_getxattr, + .listxattr = subdir_listxattr, + .removexattr = subdir_removexattr, + .lock = subdir_lock, + .bmap = subdir_bmap, }; static struct fuse_opt subdir_opts[] = { - FUSE_OPT_KEY("-h", 0), - FUSE_OPT_KEY("--help", 0), - { "subdir=%s", offsetof(struct subdir, base), 0 }, - { "rellinks", offsetof(struct subdir, rellinks), 1 }, - { "norellinks", offsetof(struct subdir, rellinks), 0 }, - FUSE_OPT_END + FUSE_OPT_KEY("-h", 0), + FUSE_OPT_KEY("--help", 0), + { "subdir=%s", offsetof(struct subdir, base), 0 }, + { "rellinks", offsetof(struct subdir, rellinks), 1 }, + { "norellinks", offsetof(struct subdir, rellinks), 0 }, + FUSE_OPT_END }; static void subdir_help(void) { - fprintf(stderr, -" -o subdir=DIR prepend this directory to all paths (mandatory)\n" -" -o [no]rellinks transform absolute symlinks to relative\n"); + fprintf(stderr, +" -o subdir=DIR prepend this directory to all paths (mandatory)\n" +" -o [no]rellinks transform absolute symlinks to relative\n"); } static int subdir_opt_proc(void *data, const char *arg, int key, - struct fuse_args *outargs) + struct fuse_args *outargs) { - (void) data; (void) arg; (void) outargs; + (void) data; (void) arg; (void) outargs; - if (!key) { - subdir_help(); - return -1; - } + if (!key) { + subdir_help(); + return -1; + } - return 1; + return 1; } static struct fuse_fs *subdir_new(struct fuse_args *args, - struct fuse_fs *next[]) -{ - struct fuse_fs *fs; - struct subdir *d; - - d = calloc(1, sizeof(struct subdir)); - if (d == NULL) { - fprintf(stderr, "fuse-subdir: memory allocation failed\n"); - return NULL; - } - - if (fuse_opt_parse(args, d, subdir_opts, subdir_opt_proc) == -1) - goto out_free; - - if (!next[0] || next[1]) { - fprintf(stderr, "fuse-subdir: exactly one next filesystem required\n"); - goto out_free; - } - - if (!d->base) { - fprintf(stderr, "fuse-subdir: missing 'subdir' option\n"); - goto out_free; - } - - if (d->base[0] && d->base[strlen(d->base)-1] != '/') { - char *tmp = realloc(d->base, strlen(d->base) + 2); - if (!tmp) { - fprintf(stderr, "fuse-subdir: memory allocation failed\n"); - goto out_free; - } - d->base = tmp; - strcat(d->base, "/"); - } - d->baselen = strlen(d->base); - d->next = next[0]; - fs = fuse_fs_new(&subdir_oper, sizeof(subdir_oper), d); - if (!fs) - goto out_free; - return fs; - - out_free: - free(d->base); - free(d); - return NULL; + struct fuse_fs *next[]) +{ + struct fuse_fs *fs; + struct subdir *d; + + d = calloc(1, sizeof(struct subdir)); + if (d == NULL) { + fprintf(stderr, "fuse-subdir: memory allocation failed\n"); + return NULL; + } + + if (fuse_opt_parse(args, d, subdir_opts, subdir_opt_proc) == -1) + goto out_free; + + if (!next[0] || next[1]) { + fprintf(stderr, "fuse-subdir: exactly one next filesystem required\n"); + goto out_free; + } + + if (!d->base) { + fprintf(stderr, "fuse-subdir: missing 'subdir' option\n"); + goto out_free; + } + + if (d->base[0] && d->base[strlen(d->base)-1] != '/') { + char *tmp = realloc(d->base, strlen(d->base) + 2); + if (!tmp) { + fprintf(stderr, "fuse-subdir: memory allocation failed\n"); + goto out_free; + } + d->base = tmp; + strcat(d->base, "/"); + } + d->baselen = strlen(d->base); + d->next = next[0]; + fs = fuse_fs_new(&subdir_oper, sizeof(subdir_oper), d); + if (!fs) + goto out_free; + return fs; + +out_free: + free(d->base); + free(d); + return NULL; } FUSE_REGISTER_MODULE(subdir, subdir_new); |