Mirror of the official OpenWrt uci repository https://git.openwrt.org/project/uci
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/*
* libuci - Library for the Unified Configuration Interface
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
/*
* This file contains the code for parsing uci config files
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <ctype.h>
#include <glob.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "uci.h"
#include "uci_internal.h"
#define LINEBUF 32
/*
* Fetch a new line from the input stream and resize buffer if necessary
*/
__private void uci_getln(struct uci_context *ctx, size_t offset)
{
struct uci_parse_context *pctx = ctx->pctx;
char *p;
size_t ofs;
if (pctx->buf == NULL) {
pctx->buf = uci_malloc(ctx, LINEBUF);
pctx->bufsz = LINEBUF;
}
/* It takes 2 slots for fgets to read 1 char. */
if (offset >= pctx->bufsz - 1) {
pctx->bufsz *= 2;
pctx->buf = uci_realloc(ctx, pctx->buf, pctx->bufsz);
}
ofs = offset;
do {
p = &pctx->buf[ofs];
p[0] = 0;
p = fgets(p, pctx->bufsz - ofs, pctx->file);
if (!p || !*p)
return;
ofs += strlen(p);
pctx->buf_filled = ofs;
if (pctx->buf[ofs - 1] == '\n') {
pctx->line++;
return;
}
pctx->bufsz *= 2;
pctx->buf = uci_realloc(ctx, pctx->buf, pctx->bufsz);
} while (1);
}
/*
* parse a character escaped by '\'
* returns true if the escaped character is to be parsed
* returns false if the escaped character is to be ignored
*/
static bool parse_backslash(struct uci_context *ctx)
{
struct uci_parse_context *pctx = ctx->pctx;
/* skip backslash */
pctx->pos += 1;
/* undecoded backslash at the end of line, fetch the next line */
if (!pctx_cur_char(pctx) ||
pctx_cur_char(pctx) == '\n' ||
(pctx_cur_char(pctx) == '\r' &&
pctx_char(pctx, pctx_pos(pctx) + 1) == '\n' &&
!pctx_char(pctx, pctx_pos(pctx) + 2))) {
uci_getln(ctx, pctx->pos);
return false;
}
/* FIXME: decode escaped char, necessary? */
return true;
}
/*
* move the string pointer forward until a non-whitespace character or
* EOL is reached
*/
static void skip_whitespace(struct uci_context *ctx)
{
struct uci_parse_context *pctx = ctx->pctx;
while (pctx_cur_char(pctx) && isspace(pctx_cur_char(pctx)))
pctx->pos += 1;
}
static inline void addc(struct uci_context *ctx, size_t *pos_dest, size_t *pos_src)
{
struct uci_parse_context *pctx = ctx->pctx;
pctx_char(pctx, *pos_dest) = pctx_char(pctx, *pos_src);
*pos_dest += 1;
*pos_src += 1;
}
static int uci_increase_pos(struct uci_parse_context *pctx, size_t add)
{
if (pctx->pos + add > pctx->buf_filled)
return -EINVAL;
pctx->pos += add;
return 0;
}
/*
* parse a double quoted string argument from the command line
*/
static void parse_double_quote(struct uci_context *ctx, size_t *target)
{
struct uci_parse_context *pctx = ctx->pctx;
char c;
/* skip quote character */
pctx->pos += 1;
while (1) {
c = pctx_cur_char(pctx);
switch(c) {
case '"':
pctx->pos += 1;
return;
case 0:
/* Multi-line str value */
uci_getln(ctx, pctx->pos);
if (!pctx_cur_char(pctx)) {
uci_parse_error(ctx, "EOF with unterminated \"");
}
break;
case '\\':
if (!parse_backslash(ctx))
continue;
/* fall through */
default:
addc(ctx, target, &pctx->pos);
break;
}
}
}
/*
* parse a single quoted string argument from the command line
*/
static void parse_single_quote(struct uci_context *ctx, size_t *target)
{
struct uci_parse_context *pctx = ctx->pctx;
char c;
/* skip quote character */
pctx->pos += 1;
while (1) {
c = pctx_cur_char(pctx);
switch(c) {
case '\'':
pctx->pos += 1;
return;
case 0:
/* Multi-line str value */
uci_getln(ctx, pctx->pos);
if (!pctx_cur_char(pctx))
uci_parse_error(ctx, "EOF with unterminated '");
break;
default:
addc(ctx, target, &pctx->pos);
}
}
}
/*
* parse a string from the command line and detect the quoting style
*/
static void parse_str(struct uci_context *ctx, size_t *target)
{
struct uci_parse_context *pctx = ctx->pctx;
bool next = true;
do {
switch(pctx_cur_char(pctx)) {
case '\'':
parse_single_quote(ctx, target);
break;
case '"':
parse_double_quote(ctx, target);
break;
case '#':
pctx_cur_char(pctx) = 0;
/* fall through */
case 0:
goto done;
case ';':
next = false;
goto done;
case '\\':
if (!parse_backslash(ctx))
continue;
/* fall through */
default:
addc(ctx, target, &pctx->pos);
break;
}
} while (pctx_cur_char(pctx) && !isspace(pctx_cur_char(pctx)));
done:
/*
* if the string was unquoted and we've stopped at a whitespace
* character, skip to the next one, because the whitespace will
* be overwritten by a null byte here
*/
if (pctx_cur_char(pctx) && next)
pctx->pos += 1;
/* terminate the parsed string */
pctx_char(pctx, *target) = 0;
}
/*
* extract the next argument from the command line
*/
static int next_arg(struct uci_context *ctx, bool required, bool name, bool package)
{
struct uci_parse_context *pctx = ctx->pctx;
size_t val, ptr;
skip_whitespace(ctx);
val = ptr = pctx_pos(pctx);
if (pctx_cur_char(pctx) == ';') {
pctx_cur_char(pctx) = 0;
pctx->pos += 1;
} else {
parse_str(ctx, &ptr);
}
if (!pctx_char(pctx, val)) {
if (required)
uci_parse_error(ctx, "insufficient arguments");
goto done;
}
if (name && !uci_validate_str(pctx_str(pctx, val), name, package))
uci_parse_error(ctx, "invalid character in name field");
done:
return val;
}
int uci_parse_argument(struct uci_context *ctx, FILE *stream, char **str, char **result)
{
int ofs_result;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, str != NULL);
UCI_ASSERT(ctx, result != NULL);
if (ctx->pctx && (ctx->pctx->file != stream))
uci_cleanup(ctx);
if (!ctx->pctx)
uci_alloc_parse_context(ctx);
ctx->pctx->file = stream;
if (!*str) {
ctx->pctx->pos = 0;
uci_getln(ctx, 0);
}
ofs_result = next_arg(ctx, false, false, false);
*result = pctx_str(ctx->pctx, ofs_result);
*str = pctx_cur_str(ctx->pctx);
return 0;
}
static int
uci_fill_ptr(struct uci_context *ctx, struct uci_ptr *ptr, struct uci_element *e)
{
UCI_ASSERT(ctx, ptr != NULL);
UCI_ASSERT(ctx, e != NULL);
memset(ptr, 0, sizeof(struct uci_ptr));
switch(e->type) {
case UCI_TYPE_OPTION:
ptr->o = uci_to_option(e);
goto fill_option;
case UCI_TYPE_SECTION:
ptr->s = uci_to_section(e);
goto fill_section;
case UCI_TYPE_PACKAGE:
ptr->p = uci_to_package(e);
goto fill_package;
default:
UCI_THROW(ctx, UCI_ERR_INVAL);
}
fill_option:
ptr->option = ptr->o->e.name;
ptr->s = ptr->o->section;
fill_section:
ptr->section = ptr->s->e.name;
ptr->p = ptr->s->package;
fill_package:
ptr->package = ptr->p->e.name;
ptr->flags |= UCI_LOOKUP_DONE;
return 0;
}
/*
* verify that the end of the line or command is reached.
* throw an error if extra arguments are given on the command line
*/
static void assert_eol(struct uci_context *ctx)
{
char *tmp;
int ofs_tmp;
skip_whitespace(ctx);
ofs_tmp = next_arg(ctx, false, false, false);
tmp = pctx_str(ctx->pctx, ofs_tmp);
if (*tmp && (ctx->flags & UCI_FLAG_STRICT))
uci_parse_error(ctx, "too many arguments");
}
/*
* switch to a different config, either triggered by uci_load, or by a
* 'package <...>' statement in the import file
*/
static void uci_switch_config(struct uci_context *ctx)
{
struct uci_parse_context *pctx;
struct uci_element *e;
const char *name;
pctx = ctx->pctx;
name = pctx->name;
/* add the last config to main config file list */
if (pctx->package) {
pctx->package->backend = ctx->backend;
uci_list_add(&ctx->root, &pctx->package->e.list);
pctx->package = NULL;
pctx->section = NULL;
}
if (!name)
return;
/*
* if an older config under the same name exists, unload it
* ignore errors here, e.g. if the config was not found
*/
e = uci_lookup_list(&ctx->root, name);
if (e)
UCI_THROW(ctx, UCI_ERR_DUPLICATE);
pctx->package = uci_alloc_package(ctx, name);
}
/*
* parse the 'package' uci command (next config package)
*/
static void uci_parse_package(struct uci_context *ctx, bool single)
{
struct uci_parse_context *pctx = ctx->pctx;
int ofs_name;
char *name;
/* command string null-terminated by strtok */
if (uci_increase_pos(pctx, strlen(pctx_cur_str(pctx)) + 1))
uci_parse_error(ctx, "package without name");
ofs_name = next_arg(ctx, true, true, true);
assert_eol(ctx);
name = pctx_str(pctx, ofs_name);
if (single)
return;
ctx->pctx->name = name;
uci_switch_config(ctx);
}
/*
* parse the 'config' uci command (open a section)
*/
static void uci_parse_config(struct uci_context *ctx)
{
struct uci_parse_context *pctx = ctx->pctx;
struct uci_element *e;
struct uci_ptr ptr;
int ofs_name, ofs_type;
char *name;
char *type;
if (!ctx->pctx->package) {
if (!ctx->pctx->name)
uci_parse_error(ctx, "attempting to import a file without a package name");
uci_switch_config(ctx);
}
/* command string null-terminated by strtok */
if (uci_increase_pos(pctx, strlen(pctx_cur_str(pctx)) + 1))
uci_parse_error(ctx, "config without name");
ofs_type = next_arg(ctx, true, false, false);
type = pctx_str(pctx, ofs_type);
if (!uci_validate_type(type))
uci_parse_error(ctx, "invalid character in type field");
ofs_name = next_arg(ctx, false, true, false);
assert_eol(ctx);
type = pctx_str(pctx, ofs_type);
name = pctx_str(pctx, ofs_name);
if (!name || !name[0]) {
ctx->internal = !pctx->merge;
UCI_NESTED(uci_add_section, ctx, pctx->package, type, &pctx->section);
} else {
uci_fill_ptr(ctx, &ptr, &pctx->package->e);
e = uci_lookup_list(&pctx->package->sections, name);
if (e) {
ptr.s = uci_to_section(e);
if ((ctx->flags & UCI_FLAG_STRICT) && strcmp(ptr.s->type, type))
uci_parse_error(ctx, "section of different type overwrites prior section with same name");
}
ptr.section = name;
ptr.value = type;
ctx->internal = !pctx->merge;
UCI_NESTED(uci_set, ctx, &ptr);
pctx->section = uci_to_section(ptr.last);
}
}
/*
* parse the 'option' uci command (open a value)
*/
static void uci_parse_option(struct uci_context *ctx, bool list)
{
struct uci_parse_context *pctx = ctx->pctx;
struct uci_element *e;
struct uci_ptr ptr;
int ofs_name, ofs_value;
char *name = NULL;
char *value = NULL;
if (!pctx->section)
uci_parse_error(ctx, "option/list command found before the first section");
/* command string null-terminated by strtok */
if (uci_increase_pos(pctx, strlen(pctx_cur_str(pctx)) + 1))
uci_parse_error(ctx, "option without name");
ofs_name = next_arg(ctx, true, true, false);
ofs_value = next_arg(ctx, false, false, false);
assert_eol(ctx);
name = pctx_str(pctx, ofs_name);
value = pctx_str(pctx, ofs_value);
uci_fill_ptr(ctx, &ptr, &pctx->section->e);
e = uci_lookup_list(&pctx->section->options, name);
if (e)
ptr.o = uci_to_option(e);
ptr.option = name;
ptr.value = value;
ctx->internal = !pctx->merge;
if (list)
UCI_NESTED(uci_add_list, ctx, &ptr);
else
UCI_NESTED(uci_set, ctx, &ptr);
}
/*
* parse a complete input line, split up combined commands by ';'
*/
static void uci_parse_line(struct uci_context *ctx, bool single)
{
struct uci_parse_context *pctx = ctx->pctx;
char *word;
/* Skip whitespace characters at the start of line */
skip_whitespace(ctx);
do {
word = strtok(pctx_cur_str(pctx), " \t");
if (!word)
return;
switch(word[0]) {
case 0:
case '#':
return;
case 'p':
if ((word[1] == 0) || !strcmp(word + 1, "ackage"))
uci_parse_package(ctx, single);
else
goto invalid;
break;
case 'c':
if ((word[1] == 0) || !strcmp(word + 1, "onfig"))
uci_parse_config(ctx);
else
goto invalid;
break;
case 'o':
if ((word[1] == 0) || !strcmp(word + 1, "ption"))
uci_parse_option(ctx, false);
else
goto invalid;
break;
case 'l':
if ((word[1] == 0) || !strcmp(word + 1, "ist"))
uci_parse_option(ctx, true);
else
goto invalid;
break;
default:
goto invalid;
}
continue;
invalid:
uci_parse_error(ctx, "invalid command");
} while (1);
}
/* max number of characters that escaping adds to the string */
#define UCI_QUOTE_ESCAPE "'\\''"
/*
* escape an uci string for export
*/
static const char *uci_escape(struct uci_context *ctx, const char *str)
{
const char *end;
int ofs = 0;
if (!ctx->buf) {
ctx->bufsz = LINEBUF;
ctx->buf = malloc(LINEBUF);
if (!ctx->buf)
return str;
}
while (1) {
int len;
end = strchr(str, '\'');
if (!end)
end = str + strlen(str);
len = end - str;
/* make sure that we have enough room in the buffer */
while (ofs + len + (int) sizeof(UCI_QUOTE_ESCAPE) + 1 > ctx->bufsz) {
ctx->bufsz *= 2;
ctx->buf = uci_realloc(ctx, ctx->buf, ctx->bufsz);
}
/* copy the string until the character before the quote */
memcpy(&ctx->buf[ofs], str, len);
ofs += len;
/* end of string? return the buffer */
if (*end == 0)
break;
memcpy(&ctx->buf[ofs], UCI_QUOTE_ESCAPE, sizeof(UCI_QUOTE_ESCAPE));
ofs += strlen(&ctx->buf[ofs]);
str = end + 1;
}
ctx->buf[ofs] = 0;
return ctx->buf;
}
/*
* export a single config package to a file stream
*/
static void uci_export_package(struct uci_package *p, FILE *stream, bool header)
{
struct uci_context *ctx = p->ctx;
struct uci_element *s, *o, *i;
if (header)
fprintf(stream, "package %s\n", uci_escape(ctx, p->e.name));
uci_foreach_element(&p->sections, s) {
struct uci_section *sec = uci_to_section(s);
fprintf(stream, "\nconfig %s", uci_escape(ctx, sec->type));
if (!sec->anonymous || (ctx->flags & UCI_FLAG_EXPORT_NAME))
fprintf(stream, " '%s'", uci_escape(ctx, sec->e.name));
fprintf(stream, "\n");
uci_foreach_element(&sec->options, o) {
struct uci_option *opt = uci_to_option(o);
switch(opt->type) {
case UCI_TYPE_STRING:
fprintf(stream, "\toption %s", uci_escape(ctx, opt->e.name));
fprintf(stream, " '%s'\n", uci_escape(ctx, opt->v.string));
break;
case UCI_TYPE_LIST:
uci_foreach_element(&opt->v.list, i) {
fprintf(stream, "\tlist %s", uci_escape(ctx, opt->e.name));
fprintf(stream, " '%s'\n", uci_escape(ctx, i->name));
}
break;
default:
fprintf(stream, "\t# unknown type for option '%s'\n", uci_escape(ctx, opt->e.name));
break;
}
}
}
fprintf(stream, "\n");
}
int uci_export(struct uci_context *ctx, FILE *stream, struct uci_package *package, bool header)
{
struct uci_element *e;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, stream != NULL);
if (package)
uci_export_package(package, stream, header);
else {
uci_foreach_element(&ctx->root, e) {
uci_export_package(uci_to_package(e), stream, header);
}
}
return 0;
}
int uci_import(struct uci_context *ctx, FILE *stream, const char *name, struct uci_package **package, bool single)
{
struct uci_parse_context *pctx;
UCI_HANDLE_ERR(ctx);
/* make sure no memory from previous parse attempts is leaked */
uci_cleanup(ctx);
uci_alloc_parse_context(ctx);
pctx = ctx->pctx;
pctx->file = stream;
if (package && *package && single) {
pctx->package = *package;
pctx->merge = true;
}
/*
* If 'name' was supplied, assume that the supplied stream does not contain
* the appropriate 'package <name>' string to specify the config name
* NB: the config file can still override the package name
*/
if (name) {
UCI_ASSERT(ctx, uci_validate_package(name));
pctx->name = name;
}
while (!feof(pctx->file)) {
pctx->pos = 0;
uci_getln(ctx, 0);
UCI_TRAP_SAVE(ctx, error);
if (pctx->buf[0])
uci_parse_line(ctx, single);
UCI_TRAP_RESTORE(ctx);
continue;
error:
if (ctx->flags & UCI_FLAG_PERROR)
uci_perror(ctx, NULL);
if ((ctx->err != UCI_ERR_PARSE) ||
(ctx->flags & UCI_FLAG_STRICT))
UCI_THROW(ctx, ctx->err);
}
if (!pctx->package && name)
uci_switch_config(ctx);
if (package)
*package = pctx->package;
if (pctx->merge)
pctx->package = NULL;
pctx->name = NULL;
uci_switch_config(ctx);
/* no error happened, we can get rid of the parser context now */
uci_cleanup(ctx);
return 0;
}
static char *uci_config_path(struct uci_context *ctx, const char *name)
{
char *filename;
UCI_ASSERT(ctx, uci_validate_package(name));
filename = uci_malloc(ctx, strlen(name) + strlen(ctx->confdir) + 2);
sprintf(filename, "%s/%s", ctx->confdir, name);
return filename;
}
static void uci_file_commit(struct uci_context *ctx, struct uci_package **package, bool overwrite)
{
struct uci_package *p = *package;
FILE *f1, *f2 = NULL;
char *volatile name = NULL;
char *volatile path = NULL;
char *filename = NULL;
struct stat statbuf;
volatile bool do_rename = false;
int fd, sz;
if (!p->path) {
if (overwrite)
p->path = uci_config_path(ctx, p->e.name);
else
UCI_THROW(ctx, UCI_ERR_INVAL);
}
sz = snprintf(NULL, 0, "%s/.%s.uci-XXXXXX", ctx->confdir, p->e.name);
filename = alloca(sz + 1);
snprintf(filename, sz + 1, "%s/.%s.uci-XXXXXX", ctx->confdir, p->e.name);
/* open the config file for writing now, so that it is locked */
f1 = uci_open_stream(ctx, p->path, NULL, SEEK_SET, true, true);
/* flush unsaved changes and reload from delta file */
UCI_TRAP_SAVE(ctx, done);
if (p->has_delta) {
if (!overwrite) {
name = uci_strdup(ctx, p->e.name);
path = uci_strdup(ctx, p->path);
/* dump our own changes to the delta file */
if (!uci_list_empty(&p->delta))
UCI_INTERNAL(uci_save, ctx, p);
/*
* other processes might have modified the config
* as well. dump and reload
*/
uci_free_package(&p);
uci_cleanup(ctx);
UCI_INTERNAL(uci_import, ctx, f1, name, &p, true);
p->path = path;
p->has_delta = true;
*package = p;
/* freed together with the uci_package */
path = NULL;
}
/* flush delta */
if (!uci_load_delta(ctx, p, true))
goto done;
}
fd = mkstemp(filename);
if (fd == -1)
UCI_THROW(ctx, UCI_ERR_IO);
if ((flock(fd, LOCK_EX) < 0) && (errno != ENOSYS))
UCI_THROW(ctx, UCI_ERR_IO);
if (lseek(fd, 0, SEEK_SET) < 0)
UCI_THROW(ctx, UCI_ERR_IO);
f2 = fdopen(fd, "w+");
if (!f2)
UCI_THROW(ctx, UCI_ERR_IO);
uci_export(ctx, f2, p, false);
fflush(f2);
fsync(fileno(f2));
uci_close_stream(f2);
do_rename = true;
UCI_TRAP_RESTORE(ctx);
done:
free(name);
free(path);
uci_close_stream(f1);
if (do_rename) {
path = realpath(p->path, NULL);
if (!path || stat(path, &statbuf) || chmod(filename, statbuf.st_mode) || rename(filename, path)) {
unlink(filename);
UCI_THROW(ctx, UCI_ERR_IO);
}
free(path);
}
if (ctx->err)
UCI_THROW(ctx, ctx->err);
}
/*
* This function returns the filename by returning the string
* after the last '/' character. By checking for a non-'\0'
* character afterwards, directories are ignored (glob marks
* those with a trailing '/'
*/
static inline char *get_filename(char *path)
{
char *p;
p = strrchr(path, '/');
p++;
if (!*p)
return NULL;
return p;
}
static char **uci_list_config_files(struct uci_context *ctx)
{
char **configs;
glob_t globbuf;
int size, j, skipped;
size_t i;
char *buf;
char *dir;
dir = uci_malloc(ctx, strlen(ctx->confdir) + 1 + sizeof("/*"));
sprintf(dir, "%s/*", ctx->confdir);
if (glob(dir, GLOB_MARK, NULL, &globbuf) != 0) {
free(dir);
UCI_THROW(ctx, UCI_ERR_NOTFOUND);
}
size = sizeof(char *) * (globbuf.gl_pathc + 1);
skipped = 0;
for(i = 0; i < globbuf.gl_pathc; i++) {
char *p;
p = get_filename(globbuf.gl_pathv[i]);
if (!p) {
skipped++;
continue;
}
size += strlen(p) + 1;
}
configs = uci_malloc(ctx, size - skipped);
buf = (char *) &configs[globbuf.gl_pathc + 1 - skipped];
j = 0;
for(i = 0; i < globbuf.gl_pathc; i++) {
char *p;
p = get_filename(globbuf.gl_pathv[i]);
if (!p)
continue;
if (!uci_validate_package(p))
continue;
configs[j++] = buf;
strcpy(buf, p);
buf += strlen(buf) + 1;
}
free(dir);
globfree(&globbuf);
return configs;
}
static struct uci_package *uci_file_load(struct uci_context *ctx,
const char *volatile name)
{
struct uci_package *package = NULL;
char *filename;
bool confdir;
FILE *volatile file = NULL;
switch (name[0]) {
case '.':
/* relative path outside of /etc/config */
if (name[1] != '/')
UCI_THROW(ctx, UCI_ERR_NOTFOUND);
/* fall through */
case '/':
/* absolute path outside of /etc/config */
filename = uci_strdup(ctx, name);
name = strrchr(name, '/') + 1;
confdir = false;
break;
default:
/* config in /etc/config */
filename = uci_config_path(ctx, name);
confdir = true;
break;
}
UCI_TRAP_SAVE(ctx, done);
file = uci_open_stream(ctx, filename, NULL, SEEK_SET, false, false);
ctx->err = 0;
UCI_INTERNAL(uci_import, ctx, file, name, &package, true);
UCI_TRAP_RESTORE(ctx);
if (package) {
package->path = filename;
package->has_delta = confdir;
uci_load_delta(ctx, package, false);
}
done:
uci_close_stream(file);
if (ctx->err) {
free(filename);
UCI_THROW(ctx, ctx->err);
}
return package;
}
__private UCI_BACKEND(uci_file_backend, "file",
.load = uci_file_load,
.commit = uci_file_commit,
.list_configs = uci_list_config_files,
);