-/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-***/
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
#include "alloc-util.h"
+#include "binfmt-util.h"
#include "conf-files.h"
#include "def.h"
#include "fd-util.h"
#include "fileio.h"
#include "log.h"
+#include "main-func.h"
+#include "pager.h"
+#include "path-util.h"
+#include "pretty-print.h"
#include "string-util.h"
#include "strv.h"
-#include "util.h"
-static const char conf_file_dirs[] = CONF_PATHS_NULSTR("binfmt.d");
+static bool arg_cat_config = false;
+static PagerFlags arg_pager_flags = 0;
+static bool arg_unregister = false;
static int delete_rule(const char *rule) {
_cleanup_free_ char *x = NULL, *fn = NULL;
char *e;
+ assert(rule);
assert(rule[0]);
- x = strdup(rule);
+ e = strchrnul(rule + 1, rule[0]);
+ x = strndup(rule + 1, e - rule - 1);
if (!x)
return log_oom();
- e = strchrnul(x+1, x[0]);
- *e = 0;
+ if (!filename_is_valid(x) ||
+ STR_IN_SET(x, "register", "status"))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Rule file name '%s' is not valid, refusing.", x);
- fn = strappend("/proc/sys/fs/binfmt_misc/", x+1);
+ fn = path_join("/proc/sys/fs/binfmt_misc", x);
if (!fn)
return log_oom();
- return write_string_file(fn, "-1", 0);
+ return write_string_file(fn, "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
}
static int apply_rule(const char *rule) {
int r;
- delete_rule(rule);
+ (void) delete_rule(rule);
- r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, 0);
+ r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0)
return log_error_errno(r, "Failed to add binary format: %m");
assert(path);
- r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
+ r = search_and_fopen(path, "re", NULL, (const char**) CONF_PATHS_STRV("binfmt.d"), &f);
if (r < 0) {
if (ignore_enoent && r == -ENOENT)
return 0;
- return log_error_errno(r, "Failed to open file '%s', ignoring: %m", path);
+ return log_error_errno(r, "Failed to open file '%s': %m", path);
}
log_debug("apply: %s", path);
for (;;) {
- char l[LINE_MAX], *p;
+ _cleanup_free_ char *line = NULL;
+ char *p;
int k;
- if (!fgets(l, sizeof(l), f)) {
- if (feof(f))
- break;
-
- return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
- }
+ k = read_line(f, LONG_LINE_MAX, &line);
+ if (k < 0)
+ return log_error_errno(k, "Failed to read file '%s': %m", path);
+ if (k == 0)
+ break;
- p = strstrip(l);
- if (!*p)
+ p = strstrip(line);
+ if (isempty(p))
continue;
- if (strchr(COMMENTS "\n", *p))
+ if (strchr(COMMENTS, p[0]))
continue;
k = apply_rule(p);
return r;
}
-static void help(void) {
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-binfmt.service", "8", &link);
+ if (r < 0)
+ return log_oom();
+
printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
- "Registers binary formats.\n\n"
+ "Registers binary formats with the kernel.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
- , program_invocation_short_name);
+ " --cat-config Show configuration files\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --unregister Unregister all existing entries\n"
+ "\nSee the %s for details.\n"
+ , program_invocation_short_name
+ , link
+ );
+
+ return 0;
}
static int parse_argv(int argc, char *argv[]) {
-
enum {
ARG_VERSION = 0x100,
+ ARG_CAT_CONFIG,
+ ARG_NO_PAGER,
+ ARG_UNREGISTER,
};
static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "cat-config", no_argument, NULL, ARG_CAT_CONFIG },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "unregister", no_argument, NULL, ARG_UNREGISTER },
{}
};
switch (c) {
case 'h':
- help();
- return 0;
+ return help();
case ARG_VERSION:
return version();
+ case ARG_CAT_CONFIG:
+ arg_cat_config = true;
+ break;
+
+ case ARG_NO_PAGER:
+ arg_pager_flags |= PAGER_DISABLE;
+ break;
+
+ case ARG_UNREGISTER:
+ arg_unregister = true;
+ break;
+
case '?':
return -EINVAL;
assert_not_reached("Unhandled option");
}
+ if ((arg_unregister || arg_cat_config) && argc > optind)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Positional arguments are not allowed with --cat-config or --unregister");
+
return 1;
}
-int main(int argc, char *argv[]) {
+static int run(int argc, char *argv[]) {
int r, k;
r = parse_argv(argc, argv);
if (r <= 0)
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
+ log_setup_service();
umask(0022);
r = 0;
+ if (arg_unregister)
+ return disable_binfmt();
+
if (argc > optind) {
int i;
_cleanup_strv_free_ char **files = NULL;
char **f;
- r = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs);
- if (r < 0) {
- log_error_errno(r, "Failed to enumerate binfmt.d files: %m");
- goto finish;
+ r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) CONF_PATHS_STRV("binfmt.d"));
+ if (r < 0)
+ return log_error_errno(r, "Failed to enumerate binfmt.d files: %m");
+
+ if (arg_cat_config) {
+ (void) pager_open(arg_pager_flags);
+
+ return cat_files(NULL, files, 0);
}
/* Flush out all rules */
- write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", 0);
+ (void) write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
STRV_FOREACH(f, files) {
k = apply_file(*f, true);
}
}
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return r;
}
+
+DEFINE_MAIN_FUNCTION(run);
projects / thirdparty / systemd.git / blobdiff