X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=fuse_xattrs.c;h=94126dc3fe0158e4c1f0885c256740d1f7afc3da;hb=642d7b81a1afa3f4eb607600c89f923823a03b07;hp=610ad4a13ec1a19dd51730dd60215d697f408c69;hpb=b0063ac38ae833b543d7301f34ed19e559f7fe49;p=rrq%2Ffuse_xattrs.git diff --git a/fuse_xattrs.c b/fuse_xattrs.c index 610ad4a..94126dc 100644 --- a/fuse_xattrs.c +++ b/fuse_xattrs.c @@ -14,28 +14,39 @@ /* For pread()/pwrite()/utimensat() */ #define _XOPEN_SOURCE 700 -/* For get_current_dir_name */ -#define _GNU_SOURCE - #include #include #include #include +#include +#include + +#ifdef __APPLE__ + #include +#else + #include +#endif -#include #include +#include #include "fuse_xattrs_config.h" #include "xattrs_config.h" #include "utils.h" #include "passthrough.h" - +#include "stringmem.h" #include "binary_storage.h" +struct xattrs_config xattrs_config; + static int xmp_setxattr(const char *path, const char *name, const char *value, size_t size, int flags) { - if (get_namespace(name) != USER) { + if (xattrs_config.show_sidecar == 0 && filename_is_sidecar(path) == 1) { + return -ENOENT; + } + + if (xattrs_config.enable_namespaces == 1 && get_namespace(name) != USER) { debug_print("Only user namespace is supported. name=%s\n", name); return -ENOTSUP; } @@ -48,25 +59,29 @@ static int xmp_setxattr(const char *path, const char *name, const char *value, s return -ENOSPC; } - char *_path = prepend_source_directory(xattrs_config.source_dir, path); + char *_path = prepend_source_directory(path); #ifdef DEBUG char *sanitized_value = sanitize_value(value, size); debug_print("path=%s name=%s value=%s size=%zu XATTR_CREATE=%d XATTR_REPLACE=%d\n", _path, name, sanitized_value, size, flags & XATTR_CREATE, flags & XATTR_REPLACE); - free(sanitized_value); + strfree(sanitized_value); #endif int rtval = binary_storage_write_key(_path, name, value, size, flags); - free(_path); + strfree(_path); return rtval; } static int xmp_getxattr(const char *path, const char *name, char *value, size_t size) { - if (get_namespace(name) != USER) { + if (xattrs_config.show_sidecar == 0 && filename_is_sidecar(path) == 1) { + return -ENOENT; + } + + if (xattrs_config.enable_namespaces == 1 && get_namespace(name) != USER) { debug_print("Only user namespace is supported. name=%s\n", name); return -ENOTSUP; } @@ -75,32 +90,52 @@ static int xmp_getxattr(const char *path, const char *name, char *value, size_t return -ERANGE; } - char *_path = prepend_source_directory(xattrs_config.source_dir, path); + char *_path = prepend_source_directory(path); debug_print("path=%s name=%s size=%zu\n", _path, name, size); int rtval = binary_storage_read_key(_path, name, value, size); - free(_path); + strfree(_path); return rtval; } +#ifdef __APPLE__ + static int xmp_setxattr_apple(const char *path, const char *name, const char *value, size_t size, int flags, u_int32_t position) { + assert(position == 0); + return xmp_setxattr(path, name, value, size, flags); + } + + static int xmp_getxattr_apple(const char *path, const char *name, char *value, size_t size, u_int32_t position) { + assert(position == 0); + return xmp_getxattr(path, name, value, size); + } +#endif + static int xmp_listxattr(const char *path, char *list, size_t size) { + if (xattrs_config.show_sidecar == 0 && filename_is_sidecar(path) == 1) { + return -ENOENT; + } + if (size > XATTR_LIST_MAX) { debug_print("The size of the list of attribute names for this file exceeds the system-imposed limit.\n"); return -E2BIG; } - char *_path = prepend_source_directory(xattrs_config.source_dir, path); + char *_path = prepend_source_directory(path); debug_print("path=%s size=%zu\n", _path, size); int rtval = binary_storage_list_keys(_path, list, size); - free(_path); + strfree(_path); return rtval; } static int xmp_removexattr(const char *path, const char *name) { - if (get_namespace(name) != USER) { + if (xattrs_config.show_sidecar == 0 && filename_is_sidecar(path) == 1) { + return -ENOENT; + } + + if (xattrs_config.enable_namespaces == 1 && get_namespace(name) != USER) { debug_print("Only user namespace is supported. name=%s\n", name); return -ENOTSUP; } @@ -109,14 +144,16 @@ static int xmp_removexattr(const char *path, const char *name) return -ERANGE; } - char *_path = prepend_source_directory(xattrs_config.source_dir, path); + char *_path = prepend_source_directory(path); debug_print("path=%s name=%s\n", _path, name); int rtval = binary_storage_remove_key(_path, name); - free(_path); + strfree(_path); return rtval; } +extern int xmp_utimens(const char *path, const struct timespec ts[2]); + static struct fuse_operations xmp_oper = { .getattr = xmp_getattr, .access = xmp_access, @@ -144,83 +181,53 @@ static struct fuse_operations xmp_oper = { #ifdef HAVE_POSIX_FALLOCATE .fallocate = xmp_fallocate, #endif +#ifdef __APPLE__ + .setxattr = xmp_setxattr_apple, + .getxattr = xmp_getxattr_apple, +#else .setxattr = xmp_setxattr, .getxattr = xmp_getxattr, +#endif .listxattr = xmp_listxattr, .removexattr = xmp_removexattr, }; - -enum { - KEY_HELP, - KEY_VERSION, -}; - - -static struct fuse_opt xattrs_opts[] = { - FUSE_OPT_KEY("-V", KEY_VERSION), - FUSE_OPT_KEY("--version", KEY_VERSION), - FUSE_OPT_KEY("-h", KEY_HELP), - FUSE_OPT_KEY("--help", KEY_HELP), - FUSE_OPT_END -}; - -int is_directory(const char *path) { - struct stat statbuf; - if (stat(path, &statbuf) != 0) { - fprintf(stderr, "cannot get source directory status: %s\n", path); - return -1; - } - - if (!S_ISDIR(statbuf.st_mode)) { - fprintf(stderr, "source directory must be a directory: %s\n", path); - return -1; - } - - return 1; -} - /** * Check if the path is valid. If it's a relative path, - * prepend the working path. + * prepend the working path. Ensure it ends with / * @param path relative or absolute path to eval. * @return new string with absolute path */ const char *sanitized_source_directory(const char *path) { - char *absolute_path; - if (strlen(path) == 0) { - return NULL; - } - - /* absolute path, we don't do anything */ - if (path[0] == '/') { - if (is_directory(path) == -1) { - return NULL; - } - absolute_path = strdup(path); - return absolute_path; + char *absolute_path = stralloc( PATH_MAX ); + if ( ( strlen( path ) == 0 ) || + ( realpath( path, absolute_path ) == 0 ) || + ( is_directory( absolute_path ) == -1 ) ) { + return NULL; // Path badness } - char *pwd = get_current_dir_name(); - size_t len = strlen(pwd) + 1 + strlen(path) + 1; - int has_trailing_backslash = (path[strlen(path)-1] == '/'); - if (!has_trailing_backslash) - len++; - - absolute_path = (char*) malloc(sizeof(char) * len); - memset(absolute_path, '\0', len); - sprintf(absolute_path, "%s/%s", pwd, path); + // Append "/" and allocate new memory for the string + return strdup( strcat( absolute_path, "/" ) ); +} - if(!has_trailing_backslash) - absolute_path[len-2] = '/'; +enum { + KEY_HELP, + KEY_VERSION, +}; - if (is_directory(absolute_path) == -1) { - free(absolute_path); - return NULL; - } +#define FUSE_XATTRS_OPT(t, p, v) { t, offsetof(struct xattrs_config, p), v } - return absolute_path; -} +static struct fuse_opt xattrs_opts[] = { + FUSE_XATTRS_OPT("show_sidecar", show_sidecar, 1), + FUSE_XATTRS_OPT("enable_namespaces", enable_namespaces, 1), + FUSE_XATTRS_OPT("sroot=%s", sidecar_dir, 0 ), + + FUSE_OPT_KEY("-V", KEY_VERSION), + FUSE_OPT_KEY("--version", KEY_VERSION), + FUSE_OPT_KEY("-h", KEY_HELP), + FUSE_OPT_KEY("--help", KEY_HELP), + FUSE_OPT_END +}; static int xattrs_opt_proc(void *data, const char *arg, int key, struct fuse_args *outargs) { @@ -229,6 +236,7 @@ static int xattrs_opt_proc(void *data, const char *arg, int key, case FUSE_OPT_KEY_NONOPT: if (!xattrs_config.source_dir) { xattrs_config.source_dir = sanitized_source_directory(arg); + xattrs_config.source_dir_size = strlen(xattrs_config.source_dir); return 0; } break; @@ -236,14 +244,17 @@ static int xattrs_opt_proc(void *data, const char *arg, int key, case KEY_HELP: fprintf(stderr, "usage: %s source_dir mountpoint [options]\n" - "\n" - "general options:\n" - " -o opt,[opt...] mount options\n" - " -h --help print help\n" - " -V --version print version\n" - "\n" - "FUSE XATTRS options:\n" - "\n", outargs->argv[0]); + "\n" + "general options:\n" + " -o opt,[opt...] mount options\n" + " -h --help print help\n" + " -V --version print version\n" + "\n" + "FUSE XATTRS options:\n" + " -o show_sidecar don't hide sidecar files\n" + " -o enable_namespaces enable namespaces checks\n" + " -o sroot=path use other sidecar root path\n" + "\n", outargs->argv[0]); fuse_opt_add_arg(outargs, "-ho"); fuse_main(outargs->argc, outargs->argv, &xmp_oper, NULL); @@ -266,6 +277,11 @@ int main(int argc, char *argv[]) { exit(1); } + if ( xattrs_config.sidecar_dir ) { + xattrs_config.sidecar_dir = + sanitized_source_directory( xattrs_config.sidecar_dir ); + } + if (!xattrs_config.source_dir) { fprintf(stderr, "missing source directory\n"); fprintf(stderr, "see `%s -h' for usage\n", argv[0]); @@ -273,5 +289,8 @@ int main(int argc, char *argv[]) { } umask(0); + + // disable multi-threading + fuse_opt_add_arg(&args, "-s"); return fuse_main(args.argc, args.argv, &xmp_oper, NULL); }