From cdccc69c62579b0c13b35fad0728079652b8f3c9 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Tue, 31 Jan 2023 11:21:30 +0100 Subject: Move library source into src sub-directory Signed-off-by: David Oberhollenzer --- bin/gensquashfs/fstree_from_file.c | 591 ------------------------------------- 1 file changed, 591 deletions(-) delete mode 100644 bin/gensquashfs/fstree_from_file.c (limited to 'bin/gensquashfs/fstree_from_file.c') diff --git a/bin/gensquashfs/fstree_from_file.c b/bin/gensquashfs/fstree_from_file.c deleted file mode 100644 index e26d4b1..0000000 --- a/bin/gensquashfs/fstree_from_file.c +++ /dev/null @@ -1,591 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * fstree_from_file.c - * - * Copyright (C) 2019 David Oberhollenzer - */ -#include "config.h" - -#include "util/util.h" -#include "io/file.h" -#include "compat.h" -#include "mkfs.h" - -#include -#include -#include -#include -#include - -struct glob_context { - const char *filename; - size_t line_num; - - struct stat *basic; - unsigned int glob_flags; - - char *name_pattern; -}; - -enum { - GLOB_MODE_FROM_SRC = 0x01, - GLOB_UID_FROM_SRC = 0x02, - GLOB_GID_FROM_SRC = 0x04, - GLOB_FLAG_PATH = 0x08, -}; - -static const struct { - const char *name; - unsigned int clear_flag; - unsigned int set_flag; -} glob_scan_flags[] = { - { "-type b", DIR_SCAN_NO_BLK, 0 }, - { "-type c", DIR_SCAN_NO_CHR, 0 }, - { "-type d", DIR_SCAN_NO_DIR, 0 }, - { "-type p", DIR_SCAN_NO_FIFO, 0 }, - { "-type f", DIR_SCAN_NO_FILE, 0 }, - { "-type l", DIR_SCAN_NO_SLINK, 0 }, - { "-type s", DIR_SCAN_NO_SOCK, 0 }, - { "-xdev", 0, DIR_SCAN_ONE_FILESYSTEM }, - { "-mount", 0, DIR_SCAN_ONE_FILESYSTEM }, - { "-keeptime", 0, DIR_SCAN_KEEP_TIME }, - { "-nonrecursive", 0, DIR_SCAN_NO_RECURSION }, -}; - -static int add_generic(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *sb, - const char *basepath, unsigned int glob_flags, - const char *extra) -{ - (void)basepath; - (void)glob_flags; - - if (fstree_add_generic(fs, path, sb, extra) == NULL) { - fprintf(stderr, "%s: " PRI_SZ ": %s: %s\n", - filename, line_num, path, strerror(errno)); - return -1; - } - - return 0; -} - -static int add_device(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *sb, const char *basepath, - unsigned int glob_flags, const char *extra) -{ - unsigned int maj, min; - char c; - - if (sscanf(extra, "%c %u %u", &c, &maj, &min) != 3) { - fprintf(stderr, "%s: " PRI_SZ ": " - "expected ' major minor'\n", - filename, line_num); - return -1; - } - - if (c == 'c' || c == 'C') { - sb->st_mode |= S_IFCHR; - } else if (c == 'b' || c == 'B') { - sb->st_mode |= S_IFBLK; - } else { - fprintf(stderr, "%s: " PRI_SZ ": unknown device type '%c'\n", - filename, line_num, c); - return -1; - } - - sb->st_rdev = makedev(maj, min); - return add_generic(fs, filename, line_num, path, sb, basepath, - glob_flags, NULL); -} - -static int add_file(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *basic, const char *basepath, - unsigned int glob_flags, const char *extra) -{ - if (extra == NULL || *extra == '\0') - extra = path; - - return add_generic(fs, filename, line_num, path, basic, - basepath, glob_flags, extra); -} - -static int add_hard_link(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *basic, - const char *basepath, unsigned int glob_flags, - const char *extra) -{ - (void)basepath; - (void)glob_flags; - (void)basic; - - if (fstree_add_hard_link(fs, path, extra) == NULL) { - fprintf(stderr, "%s: " PRI_SZ ": %s\n", - filename, line_num, strerror(errno)); - return -1; - } - return 0; -} - -static int glob_node_callback(void *user, fstree_t *fs, tree_node_t *node) -{ - struct glob_context *ctx = user; - char *path; - int ret; - (void)fs; - - if (!(ctx->glob_flags & GLOB_MODE_FROM_SRC)) { - node->mode &= ~(07777); - node->mode |= ctx->basic->st_mode & 07777; - } - - if (!(ctx->glob_flags & GLOB_UID_FROM_SRC)) - node->uid = ctx->basic->st_uid; - - if (!(ctx->glob_flags & GLOB_GID_FROM_SRC)) - node->gid = ctx->basic->st_gid; - - if (ctx->name_pattern != NULL) { - if (ctx->glob_flags & GLOB_FLAG_PATH) { - path = fstree_get_path(node); - if (path == NULL) { - fprintf(stderr, "%s: " PRI_SZ ": %s\n", - ctx->filename, ctx->line_num, - strerror(errno)); - return -1; - } - - ret = canonicalize_name(path); - assert(ret == 0); - - ret = fnmatch(ctx->name_pattern, path, FNM_PATHNAME); - free(path); - } else { - ret = fnmatch(ctx->name_pattern, node->name, 0); - } - - if (ret != 0) - return 1; - } - - return 0; -} - -static size_t name_string_length(const char *str) -{ - size_t len = 0; - int start; - - if (*str == '"' || *str == '\'') { - start = *str; - ++len; - - while (str[len] != '\0' && str[len] != start) - ++len; - - if (str[len] == start) - ++len; - } else { - while (str[len] != '\0' && !isspace(str[len])) - ++len; - } - - return len; -} - -static void quote_remove(char *str) -{ - char *dst = str; - int start = *(str++); - - if (start != '\'' && start != '"') - return; - - while (*str != start && *str != '\0') - *(dst++) = *(str++); - - *(dst++) = '\0'; -} - -static int glob_files(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *basic, - const char *basepath, unsigned int glob_flags, - const char *extra) -{ - unsigned int scan_flags = 0, all_flags; - struct glob_context ctx; - bool first_clear_flag; - size_t i, count, len; - tree_node_t *root; - int ret; - - memset(&ctx, 0, sizeof(ctx)); - ctx.filename = filename; - ctx.line_num = line_num; - ctx.basic = basic; - ctx.glob_flags = glob_flags; - - /* fetch the actual target node */ - root = fstree_get_node_by_path(fs, fs->root, path, true, false); - if (root == NULL) { - fprintf(stderr, "%s: " PRI_SZ ": %s: %s\n", - filename, line_num, path, strerror(errno)); - return -1; - } - - /* process options */ - first_clear_flag = true; - - all_flags = DIR_SCAN_NO_BLK | DIR_SCAN_NO_CHR | DIR_SCAN_NO_DIR | - DIR_SCAN_NO_FIFO | DIR_SCAN_NO_FILE | DIR_SCAN_NO_SLINK | - DIR_SCAN_NO_SOCK; - - while (extra != NULL && *extra != '\0') { - count = sizeof(glob_scan_flags) / sizeof(glob_scan_flags[0]); - - for (i = 0; i < count; ++i) { - len = strlen(glob_scan_flags[i].name); - if (strncmp(extra, glob_scan_flags[i].name, len) != 0) - continue; - - if (isspace(extra[len])) { - extra += len; - while (isspace(*extra)) - ++extra; - break; - } - } - - if (i < count) { - if (glob_scan_flags[i].clear_flag != 0 && - first_clear_flag) { - scan_flags |= all_flags; - first_clear_flag = false; - } - - scan_flags &= ~(glob_scan_flags[i].clear_flag); - scan_flags |= glob_scan_flags[i].set_flag; - continue; - } - - if (strncmp(extra, "-name", 5) == 0 && isspace(extra[5])) { - for (extra += 5; isspace(*extra); ++extra) - ; - - len = name_string_length(extra); - - free(ctx.name_pattern); - ctx.name_pattern = strndup(extra, len); - extra += len; - - while (isspace(*extra)) - ++extra; - - quote_remove(ctx.name_pattern); - continue; - } - - if (strncmp(extra, "-path", 5) == 0 && isspace(extra[5])) { - for (extra += 5; isspace(*extra); ++extra) - ; - - len = name_string_length(extra); - - free(ctx.name_pattern); - ctx.name_pattern = strndup(extra, len); - extra += len; - - while (isspace(*extra)) - ++extra; - - quote_remove(ctx.name_pattern); - ctx.glob_flags |= GLOB_FLAG_PATH; - continue; - } - - if (extra[0] == '-') { - if (extra[1] == '-' && isspace(extra[2])) { - extra += 2; - while (isspace(*extra)) - ++extra; - break; - } - - fprintf(stderr, "%s: " PRI_SZ ": unknown option.\n", - filename, line_num); - free(ctx.name_pattern); - return -1; - } else { - break; - } - } - - if (extra != NULL && *extra == '\0') - extra = NULL; - - /* do the scan */ - if (basepath == NULL) { - if (extra == NULL) { - ret = fstree_from_dir(fs, root, ".", glob_node_callback, - &ctx, scan_flags); - } else { - ret = fstree_from_dir(fs, root, extra, - glob_node_callback, - &ctx, scan_flags); - } - } else { - ret = fstree_from_subdir(fs, root, basepath, extra, - glob_node_callback, &ctx, - scan_flags); - } - - free(ctx.name_pattern); - return ret; -} - -static const struct callback_t { - const char *keyword; - unsigned int mode; - bool need_extra; - bool is_glob; - bool allow_root; - int (*callback)(fstree_t *fs, const char *filename, size_t line_num, - const char *path, struct stat *sb, - const char *basepath, unsigned int glob_flags, - const char *extra); -} file_list_hooks[] = { - { "dir", S_IFDIR, false, false, true, add_generic }, - { "slink", S_IFLNK, true, false, false, add_generic }, - { "link", 0, true, false, false, add_hard_link }, - { "nod", 0, true, false, false, add_device }, - { "pipe", S_IFIFO, false, false, false, add_generic }, - { "sock", S_IFSOCK, false, false, false, add_generic }, - { "file", S_IFREG, false, false, false, add_file }, - { "glob", 0, false, true, true, glob_files }, -}; - -#define NUM_HOOKS (sizeof(file_list_hooks) / sizeof(file_list_hooks[0])) - -static char *skip_space(char *str) -{ - if (!isspace(*str)) - return NULL; - while (isspace(*str)) - ++str; - return str; -} - -static char *read_u32(char *str, sqfs_u32 *out, sqfs_u32 base) -{ - *out = 0; - - if (!isdigit(*str)) - return NULL; - - while (isdigit(*str)) { - sqfs_u32 x = *(str++) - '0'; - - if (x >= base || (*out) > (0xFFFFFFFF - x) / base) - return NULL; - - (*out) = (*out) * base + x; - } - - return str; -} - -static char *read_str(char *str, char **out) -{ - *out = str; - - if (*str == '"') { - char *ptr = str++; - - while (*str != '\0' && *str != '"') { - if (str[0] == '\\' && - (str[1] == '"' || str[1] == '\\')) { - *(ptr++) = str[1]; - str += 2; - } else { - *(ptr++) = *(str++); - } - } - - if (str[0] != '"' || !isspace(str[1])) - return NULL; - - *ptr = '\0'; - ++str; - } else { - while (*str != '\0' && !isspace(*str)) - ++str; - - if (!isspace(*str)) - return NULL; - - *(str++) = '\0'; - } - - while (isspace(*str)) - ++str; - - return str; -} - -static int handle_line(fstree_t *fs, const char *filename, - size_t line_num, char *line, - const char *basepath) -{ - const char *extra = NULL, *msg = NULL; - const struct callback_t *cb = NULL; - unsigned int glob_flags = 0; - sqfs_u32 uid, gid, mode; - struct stat sb; - char *path; - - for (size_t i = 0; i < NUM_HOOKS; ++i) { - size_t len = strlen(file_list_hooks[i].keyword); - if (strncmp(file_list_hooks[i].keyword, line, len) != 0) - continue; - - if (isspace(line[len])) { - cb = file_list_hooks + i; - line = skip_space(line + len); - break; - } - } - - if (cb == NULL) - goto fail_kw; - - if ((line = read_str(line, &path)) == NULL) - goto fail_ent; - - if (canonicalize_name(path)) - goto fail_ent; - - if (*path == '\0' && !cb->allow_root) - goto fail_root; - - if (cb->is_glob && *line == '*') { - ++line; - mode = 0; - glob_flags |= GLOB_MODE_FROM_SRC; - } else { - if ((line = read_u32(line, &mode, 8)) == NULL || mode > 07777) - goto fail_mode; - } - - if ((line = skip_space(line)) == NULL) - goto fail_ent; - - if (cb->is_glob && *line == '*') { - ++line; - uid = 0; - glob_flags |= GLOB_UID_FROM_SRC; - } else { - if ((line = read_u32(line, &uid, 10)) == NULL) - goto fail_uid_gid; - } - - if ((line = skip_space(line)) == NULL) - goto fail_ent; - - if (cb->is_glob && *line == '*') { - ++line; - gid = 0; - glob_flags |= GLOB_GID_FROM_SRC; - } else { - if ((line = read_u32(line, &gid, 10)) == NULL) - goto fail_uid_gid; - } - - if ((line = skip_space(line)) != NULL && *line != '\0') - extra = line; - - if (cb->need_extra && extra == NULL) - goto fail_no_extra; - - /* forward to callback */ - memset(&sb, 0, sizeof(sb)); - sb.st_mtime = fs->defaults.st_mtime; - sb.st_mode = mode | cb->mode; - sb.st_uid = uid; - sb.st_gid = gid; - - return cb->callback(fs, filename, line_num, path, - &sb, basepath, glob_flags, extra); -fail_root: - fprintf(stderr, "%s: " PRI_SZ ": cannot use / as argument for %s.\n", - filename, line_num, cb->keyword); - return -1; -fail_no_extra: - fprintf(stderr, "%s: " PRI_SZ ": missing argument for %s.\n", - filename, line_num, cb->keyword); - return -1; -fail_uid_gid: - msg = "uid & gid must be decimal numbers < 2^32"; - goto out_desc; -fail_mode: - msg = "mode must be an octal number <= 07777"; - goto out_desc; -fail_kw: - msg = "unknown entry type"; - goto out_desc; -fail_ent: - msg = "error in entry description"; - goto out_desc; -out_desc: - fprintf(stderr, "%s: " PRI_SZ ": %s.\n", filename, line_num, msg); - fputs("expected: []\n", - stderr); - return -1; -} - -int fstree_from_file_stream(fstree_t *fs, istream_t *fp, const char *basepath) -{ - const char *filename; - size_t line_num = 1; - char *line; - int ret; - - filename = istream_get_filename(fp); - - for (;;) { - ret = istream_get_line(fp, &line, &line_num, - ISTREAM_LINE_LTRIM | ISTREAM_LINE_SKIP_EMPTY); - if (ret < 0) - return -1; - if (ret > 0) - break; - - if (line[0] != '#') { - if (handle_line(fs, filename, line_num, - line, basepath)) { - goto fail_line; - } - } - - free(line); - ++line_num; - } - - return 0; -fail_line: - free(line); - return -1; -} - -int fstree_from_file(fstree_t *fs, const char *filename, const char *basepath) -{ - istream_t *fp; - int ret; - - fp = istream_open_file(filename); - if (fp == NULL) - return -1; - - ret = fstree_from_file_stream(fs, fp, basepath); - - sqfs_drop(fp); - return ret; -} -- cgit v1.2.3