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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* glob.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "mkfs.h"
static const struct {
const char *name;
unsigned int flag;
} glob_types[] = {
{ "b", DIR_SCAN_NO_BLK }, { "B", DIR_SCAN_NO_BLK },
{ "c", DIR_SCAN_NO_CHR }, { "C", DIR_SCAN_NO_CHR },
{ "d", DIR_SCAN_NO_DIR }, { "D", DIR_SCAN_NO_DIR },
{ "p", DIR_SCAN_NO_FIFO }, { "P", DIR_SCAN_NO_FIFO },
{ "f", DIR_SCAN_NO_FILE }, { "F", DIR_SCAN_NO_FILE },
{ "l", DIR_SCAN_NO_SLINK }, { "L", DIR_SCAN_NO_SLINK },
{ "s", DIR_SCAN_NO_SOCK }, { "S", DIR_SCAN_NO_SOCK },
};
static bool apply_type_flag(bool is_first, const char *arg,
unsigned int *flags)
{
size_t count = sizeof(glob_types) / sizeof(glob_types[0]);
if (is_first) {
for (size_t i = 0; i < count; ++i)
(*flags) |= glob_types[i].flag;
}
for (size_t i = 0; i < count; ++i) {
if (!strcmp(glob_types[i].name, arg)) {
(*flags) &= ~(glob_types[i].flag);
return true;
}
}
return false;
}
static const struct {
const char *name;
unsigned int flag;
} glob_scan_flags[] = {
{ "-xdev", DIR_SCAN_ONE_FILESYSTEM },
{ "-mount", DIR_SCAN_ONE_FILESYSTEM },
{ "-keeptime", DIR_SCAN_KEEP_TIME },
{ "-nonrecursive", DIR_SCAN_NO_RECURSION },
};
static bool set_scan_flag(const char *arg, dir_tree_cfg_t *cfg)
{
size_t count = sizeof(glob_scan_flags) / sizeof(glob_scan_flags[0]);
for (size_t i = 0; i < count; ++i) {
if (!strcmp(arg, glob_scan_flags[i].name)) {
cfg->flags |= glob_scan_flags[i].flag;
return true;
}
}
return false;
}
int glob_files(fstree_t *fs, const char *filename, size_t line_num,
const sqfs_dir_entry_t *ent,
const char *basepath, unsigned int glob_flags,
split_line_t *sep)
{
bool first_type_flag = true;
dir_iterator_t *dir = NULL;
char *prefix = NULL;
dir_tree_cfg_t cfg;
tree_node_t *root;
int ret;
/* fetch the actual target node */
root = fstree_get_node_by_path(fs, fs->root, ent->name, true, false);
if (root == NULL)
goto fail_path;
if (!S_ISDIR(root->mode))
goto fail_not_dir;
prefix = fstree_get_path(root);
if (prefix == NULL)
goto fail_alloc;
if (canonicalize_name(prefix) != 0)
goto fail_prefix;
/* process options */
memset(&cfg, 0, sizeof(cfg));
cfg.def_mtime = ent->mtime;
cfg.def_uid = ent->uid;
cfg.def_gid = ent->gid;
cfg.def_mode = ent->mode;
cfg.prefix = prefix;
cfg.flags = glob_flags;
while (sep->count != 0) {
if (sep->args[0][0] != '-')
break;
if (!strcmp(sep->args[0], "--")) {
split_line_remove_front(sep, 1);
break;
}
if (set_scan_flag(sep->args[0], &cfg)) {
split_line_remove_front(sep, 1);
} else if (!strcmp(sep->args[0], "-type")) {
if (sep->count < 2)
goto fail_no_arg;
if (!apply_type_flag(first_type_flag, sep->args[1],
&cfg.flags)) {
goto fail_type;
}
first_type_flag = false;
split_line_remove_front(sep, 2);
} else if (!strcmp(sep->args[0], "-name")) {
if (sep->count < 2)
goto fail_no_arg;
cfg.name_pattern = sep->args[1];
split_line_remove_front(sep, 2);
} else if (!strcmp(sep->args[0], "-path")) {
if (sep->count < 2)
goto fail_no_arg;
cfg.name_pattern = sep->args[1];
cfg.flags |= DIR_SCAN_MATCH_FULL_PATH;
split_line_remove_front(sep, 2);
} else {
goto fail_unknown;
}
}
/* do the scan */
if (sep->count == 0) {
dir = dir_tree_iterator_create(basepath, &cfg);
} else {
size_t plen = strlen(basepath);
size_t slen = strlen(sep->args[0]);
char *temp = calloc(1, plen + 1 + slen + 1);
if (temp == NULL)
goto fail_alloc;
memcpy(temp, basepath, plen);
temp[plen] = '/';
memcpy(temp + plen + 1, sep->args[0], slen);
temp[plen + 1 + slen] = '\0';
dir = dir_tree_iterator_create(temp, &cfg);
free(temp);
}
if (dir == NULL)
goto fail;
ret = fstree_from_dir(fs, dir);
sqfs_drop(dir);
free(prefix);
return ret;
fail_unknown:
fprintf(stderr, "%s: " PRI_SZ ": unknown glob option: %s.\n",
filename, line_num, sep->args[0]);
goto fail;
fail_path:
fprintf(stderr, "%s: " PRI_SZ ": %s: %s\n",
filename, line_num, ent->name, strerror(errno));
goto fail;
fail_not_dir:
fprintf(stderr, "%s: " PRI_SZ ": %s is not a directoy!\n",
filename, line_num, ent->name);
goto fail;
fail_prefix:
fprintf(stderr, "%s: " PRI_SZ ": error cannonicalizing `%s`!\n",
filename, line_num, prefix);
goto fail;
fail_alloc:
fprintf(stderr, "%s: " PRI_SZ ": out of memory\n",
filename, line_num);
goto fail;
fail_type:
fprintf(stderr, "%s: " PRI_SZ ": unknown file type `%s`\n",
filename, line_num, sep->args[1]);
goto fail;
fail_no_arg:
fprintf(stderr, "%s: " PRI_SZ ": missing argument for `%s`\n",
filename, line_num, sep->args[0]);
goto fail;
fail:
free(prefix);
return -1;
}
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