From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/fsck/fsck.c | 420 +++++++++++++++++++++++++++++++++++++++++++++++++++ src/fsck/meson.build | 8 + 2 files changed, 428 insertions(+) create mode 100644 src/fsck/fsck.c create mode 100644 src/fsck/meson.build (limited to 'src/fsck') diff --git a/src/fsck/fsck.c b/src/fsck/fsck.c new file mode 100644 index 0000000..000ed69 --- /dev/null +++ b/src/fsck/fsck.c @@ -0,0 +1,420 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/*** + Copyright © 2014 Holger Hans Peter Freyther +***/ + +#include +#include +#include +#include +#include +#include +#include + +#include "sd-bus.h" +#include "sd-device.h" + +#include "alloc-util.h" +#include "bus-common-errors.h" +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-util.h" +#include "device-util.h" +#include "fd-util.h" +#include "fs-util.h" +#include "fsck-util.h" +#include "main-func.h" +#include "parse-util.h" +#include "path-util.h" +#include "proc-cmdline.h" +#include "process-util.h" +#include "signal-util.h" +#include "socket-util.h" +#include "special.h" +#include "stdio-util.h" + +static bool arg_skip = false; +static bool arg_force = false; +static bool arg_show_progress = false; +static const char *arg_repair = "-a"; + +static void start_target(const char *target, const char *mode) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + assert(target); + + r = bus_connect_system_systemd(&bus); + if (r < 0) { + log_error_errno(r, "Failed to get D-Bus connection: %m"); + return; + } + + log_info("Requesting %s/start/%s", target, mode); + + /* Start this unit only if we can replace basic.target with it */ + r = bus_call_method(bus, bus_systemd_mgr, "StartUnitReplace", &error, NULL, "sss", "basic.target", target, mode); + + /* Don't print a warning if we aren't called during startup */ + if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) + log_error("Failed to start unit: %s", bus_error_message(&error, r)); +} + +static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { + int r; + + assert(key); + + if (streq(key, "fsck.mode")) { + + if (proc_cmdline_value_missing(key, value)) + return 0; + + if (streq(value, "auto")) + arg_force = arg_skip = false; + else if (streq(value, "force")) + arg_force = true; + else if (streq(value, "skip")) + arg_skip = true; + else + log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); + + } else if (streq(key, "fsck.repair")) { + + if (proc_cmdline_value_missing(key, value)) + return 0; + + if (streq(value, "preen")) + arg_repair = "-a"; + else { + r = parse_boolean(value); + if (r > 0) + arg_repair = "-y"; + else if (r == 0) + arg_repair = "-n"; + else + log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); + } + } + +#if HAVE_SYSV_COMPAT + else if (streq(key, "fastboot") && !value) { + log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); + arg_skip = true; + + } else if (streq(key, "forcefsck") && !value) { + log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); + arg_force = true; + } +#endif + + return 0; +} + +static void test_files(void) { + +#if HAVE_SYSV_COMPAT + if (access("/fastboot", F_OK) >= 0) { + log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); + arg_skip = true; + } + + if (access("/forcefsck", F_OK) >= 0) { + log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); + arg_force = true; + } +#endif + + arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0; +} + +static double percent(int pass, unsigned long cur, unsigned long max) { + /* Values stolen from e2fsck */ + + static const int pass_table[] = { + 0, 70, 90, 92, 95, 100 + }; + + if (pass <= 0) + return 0.0; + + if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) + return 100.0; + + return (double) pass_table[pass-1] + + ((double) pass_table[pass] - (double) pass_table[pass-1]) * + (double) cur / (double) max; +} + +static int process_progress(int fd, FILE* console) { + _cleanup_fclose_ FILE *f = NULL; + usec_t last = 0; + bool locked = false; + int clear = 0, r; + + /* No progress pipe to process? Then we are a NOP. */ + if (fd < 0) + return 0; + + f = fdopen(fd, "r"); + if (!f) { + safe_close(fd); + return log_debug_errno(errno, "Failed to use pipe: %m"); + } + + for (;;) { + int pass; + unsigned long cur, max; + _cleanup_free_ char *device = NULL; + double p; + usec_t t; + + if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) { + + if (ferror(f)) + r = log_warning_errno(errno, "Failed to read from progress pipe: %m"); + else if (feof(f)) + r = 0; + else + r = log_warning_errno(SYNTHETIC_ERRNO(errno), "Failed to parse progress pipe data"); + + break; + } + + /* Only show one progress counter at max */ + if (!locked) { + if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) + continue; + + locked = true; + } + + /* Only update once every 50ms */ + t = now(CLOCK_MONOTONIC); + if (last + 50 * USEC_PER_MSEC > t) + continue; + + last = t; + + p = percent(pass, cur, max); + r = fprintf(console, "\r%s: fsck %3.1f%% complete...\r", device, p); + if (r < 0) + return -EIO; /* No point in continuing if something happened to our output stream */ + + fflush(console); + clear = MAX(clear, r); + } + + if (clear > 0) { + fputc('\r', console); + for (int j = 0; j < clear; j++) + fputc(' ', console); + fputc('\r', console); + fflush(console); + } + + return r; +} + +static int fsck_progress_socket(void) { + _cleanup_close_ int fd = -EBADF; + int r; + + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if (fd < 0) + return log_warning_errno(errno, "socket(): %m"); + + r = connect_unix_path(fd, AT_FDCWD, "/run/systemd/fsck.progress"); + if (r < 0) + return log_full_errno(IN_SET(r, -ECONNREFUSED, -ENOENT) ? LOG_DEBUG : LOG_WARNING, + r, "Failed to connect to progress socket, ignoring: %m"); + + return TAKE_FD(fd); +} + +static int run(int argc, char *argv[]) { + _cleanup_close_pair_ int progress_pipe[2] = EBADF_PAIR; + _cleanup_(sd_device_unrefp) sd_device *dev = NULL; + _cleanup_free_ char *dpath = NULL; + _cleanup_fclose_ FILE *console = NULL; + const char *device, *type; + bool root_directory; + struct stat st; + int r, exit_status; + pid_t pid; + + log_setup(); + + if (argc > 2) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "This program expects one or no arguments."); + + umask(0022); + + r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); + if (r < 0) + log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); + + test_files(); + + if (!arg_force && arg_skip) + return 0; + + if (argc > 1) { + dpath = strdup(argv[1]); + if (!dpath) + return log_oom(); + + device = dpath; + + if (stat(device, &st) < 0) + return log_error_errno(errno, "Failed to stat %s: %m", device); + + if (!S_ISBLK(st.st_mode)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "%s is not a block device.", + device); + + r = sd_device_new_from_stat_rdev(&dev, &st); + if (r < 0) + return log_error_errno(r, "Failed to detect device %s: %m", device); + + root_directory = false; + } else { + struct timespec times[2]; + + /* Find root device */ + + if (stat("/", &st) < 0) + return log_error_errno(errno, "Failed to stat() the root directory: %m"); + + /* Virtual root devices don't need an fsck */ + if (major(st.st_dev) == 0) { + log_debug("Root directory is virtual or btrfs, skipping check."); + return 0; + } + + /* check if we are already writable */ + times[0] = st.st_atim; + times[1] = st.st_mtim; + + if (utimensat(AT_FDCWD, "/", times, 0) == 0) { + log_info("Root directory is writable, skipping check."); + return 0; + } + + r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); + if (r < 0) + return log_error_errno(r, "Failed to detect root device: %m"); + + r = sd_device_get_devname(dev, &device); + if (r < 0) + return log_device_error_errno(dev, r, "Failed to detect device node of root directory: %m"); + + root_directory = true; + } + + if (sd_device_get_property_value(dev, "ID_FS_TYPE", &type) >= 0) { + r = fsck_exists_for_fstype(type); + if (r < 0) + log_device_warning_errno(dev, r, "Couldn't detect if fsck.%s may be used, proceeding: %m", type); + else if (r == 0) { + log_device_info(dev, "fsck.%s doesn't exist, not checking file system.", type); + return 0; + } + } else { + r = fsck_exists(); + if (r < 0) + log_device_warning_errno(dev, r, "Couldn't detect if the fsck command may be used, proceeding: %m"); + else if (r == 0) { + log_device_info(dev, "The fsck command does not exist, not checking file system."); + return 0; + } + } + + console = fopen("/dev/console", "we"); + if (console && + arg_show_progress && + pipe(progress_pipe) < 0) + return log_error_errno(errno, "pipe(): %m"); + + r = safe_fork("(fsck)", FORK_RESET_SIGNALS|FORK_DEATHSIG_SIGTERM|FORK_LOG|FORK_RLIMIT_NOFILE_SAFE, &pid); + if (r < 0) + return r; + if (r == 0) { + char dash_c[STRLEN("-C") + DECIMAL_STR_MAX(int) + 1]; + int progress_socket = -1; + const char *cmdline[9]; + int i = 0; + + /* Child */ + + /* Close the reading side of the progress pipe */ + progress_pipe[0] = safe_close(progress_pipe[0]); + + /* Try to connect to a progress management daemon, if there is one */ + progress_socket = fsck_progress_socket(); + if (progress_socket >= 0) { + /* If this worked we close the progress pipe early, and just use the socket */ + progress_pipe[1] = safe_close(progress_pipe[1]); + xsprintf(dash_c, "-C%i", progress_socket); + } else if (progress_pipe[1] >= 0) { + /* Otherwise if we have the progress pipe to our own local handle, we use it */ + xsprintf(dash_c, "-C%i", progress_pipe[1]); + } else + dash_c[0] = 0; + + cmdline[i++] = "fsck"; + cmdline[i++] = arg_repair; + cmdline[i++] = "-T"; + + /* + * Since util-linux v2.25 fsck uses /run/fsck/.lock files. + * The previous versions use flock for the device and conflict with + * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 + */ + cmdline[i++] = "-l"; + + if (!root_directory) + cmdline[i++] = "-M"; + + if (arg_force) + cmdline[i++] = "-f"; + + if (!isempty(dash_c)) + cmdline[i++] = dash_c; + + cmdline[i++] = device; + cmdline[i++] = NULL; + + execvp(cmdline[0], (char**) cmdline); + _exit(FSCK_OPERATIONAL_ERROR); + } + + if (console) { + progress_pipe[1] = safe_close(progress_pipe[1]); + (void) process_progress(TAKE_FD(progress_pipe[0]), console); + } + + exit_status = wait_for_terminate_and_check("fsck", pid, WAIT_LOG_ABNORMAL); + if (exit_status < 0) + return exit_status; + if ((exit_status & ~FSCK_ERROR_CORRECTED) != FSCK_SUCCESS) { + log_error("fsck failed with exit status %i.", exit_status); + + if ((exit_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory) { + /* System should be rebooted. */ + start_target(SPECIAL_REBOOT_TARGET, "replace-irreversibly"); + return -EINVAL; + } else if (!(exit_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED))) + log_warning("Ignoring error."); + } + + if (exit_status & FSCK_ERROR_CORRECTED) + (void) touch("/run/systemd/quotacheck"); + + return !!(exit_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED)); +} + +DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); diff --git a/src/fsck/meson.build b/src/fsck/meson.build new file mode 100644 index 0000000..e85e8c0 --- /dev/null +++ b/src/fsck/meson.build @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: LGPL-2.1-or-later + +executables += [ + libexec_template + { + 'name' : 'systemd-fsck', + 'sources' : files('fsck.c'), + }, +] -- cgit v1.2.3