From d7f69e16f1a5b84e9acf1771a9b53da3787ae79d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= Date: Sat, 22 Oct 2016 15:31:14 -0400 Subject: [PATCH] tree-wide: make parse_proc_cmdline() strip "rd." prefix automatically This stripping is contolled by a new boolean parameter. When the parameter is true, it means that the caller does not care about the distinction between initrd and real root, and wants to act on both rd-dot-prefixed and unprefixed parameters in the initramfs, and only on the unprefixed parameters in real root. If the parameter is false, behaviour is the same as before. Changes by caller: log.c (systemd.log_*): changed to accept rd-dot-prefix params pid1: no change, custom logic cryptsetup-generator: no change, still accepts rd-dot-prefix params debug-generator: no change, does not accept rd-dot-prefix params fsck: changed to accept rd-dot-prefix params fstab-generator: no change, custom logic gpt-auto-generator: no change, custom logic hibernate-resume-generator: no change, does not accept rd-dot-prefix params journald: changed to accept rd-dot-prefix params modules-load: no change, still accepts rd-dot-prefix params quote-check: no change, does not accept rd-dot-prefix params udevd: no change, still accepts rd-dot-prefix params I added support for "rd." params in the three cases where I think it's useful: logging, fsck options, journald forwarding options. --- src/basic/log.c | 2 +- src/basic/proc-cmdline.c | 11 +++++++---- src/basic/proc-cmdline.h | 4 +++- src/core/main.c | 2 +- src/cryptsetup/cryptsetup-generator.c | 14 +++++++------- src/debug-generator/debug-generator.c | 2 +- src/fsck/fsck.c | 2 +- src/fstab-generator/fstab-generator.c | 2 +- src/gpt-auto-generator/gpt-auto-generator.c | 2 +- src/hibernate-resume/hibernate-resume-generator.c | 2 +- src/journal/journald-server.c | 2 +- src/modules-load/modules-load.c | 4 ++-- src/quotacheck/quotacheck.c | 2 +- src/test/test-proc-cmdline.c | 2 +- src/udev/udevd.c | 5 +---- 15 files changed, 30 insertions(+), 28 deletions(-) diff --git a/src/basic/log.c b/src/basic/log.c index 40f342ca72..2ff70be255 100644 --- a/src/basic/log.c +++ b/src/basic/log.c @@ -1012,7 +1012,7 @@ void log_parse_environment(void) { /* Only try to read the command line in daemons. We assume that anything that has a controlling tty is user stuff. */ - (void) parse_proc_cmdline(parse_proc_cmdline_item, NULL); + (void) parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); e = secure_getenv("SYSTEMD_LOG_TARGET"); if (e && log_set_target_from_string(e) < 0) diff --git a/src/basic/proc-cmdline.c b/src/basic/proc-cmdline.c index 951db34d1a..8297a222b7 100644 --- a/src/basic/proc-cmdline.c +++ b/src/basic/proc-cmdline.c @@ -42,7 +42,9 @@ int proc_cmdline(char **ret) { return read_one_line_file("/proc/cmdline", ret); } -int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data), void *data) { +int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data), + void *data, + bool strip_prefix) { _cleanup_free_ char *line = NULL; const char *p; int r; @@ -56,7 +58,7 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, voi p = line; for (;;) { _cleanup_free_ char *word = NULL; - char *value = NULL; + char *value = NULL, *unprefixed; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_RELAX); if (r < 0) @@ -66,14 +68,15 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, voi /* Filter out arguments that are intended only for the * initrd */ - if (!in_initrd() && startswith(word, "rd.")) + unprefixed = startswith(word, "rd."); + if (unprefixed && !in_initrd()) continue; value = strchr(word, '='); if (value) *(value++) = 0; - r = parse_item(word, value, data); + r = parse_item(strip_prefix && unprefixed ? unprefixed : word, value, data); if (r < 0) return r; } diff --git a/src/basic/proc-cmdline.h b/src/basic/proc-cmdline.h index a8832d8419..6d6ee95c11 100644 --- a/src/basic/proc-cmdline.h +++ b/src/basic/proc-cmdline.h @@ -20,7 +20,9 @@ ***/ int proc_cmdline(char **ret); -int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value, void *data), void *data); +int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data), + void *data, + bool strip_prefix); int get_proc_cmdline_key(const char *parameter, char **value); int shall_restore_state(void); diff --git a/src/core/main.c b/src/core/main.c index bf9bba28d6..ffc7725f16 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -1570,7 +1570,7 @@ int main(int argc, char *argv[]) { } if (arg_system) { - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); } diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c index 7193d93070..e2dc4327fe 100644 --- a/src/cryptsetup/cryptsetup-generator.c +++ b/src/cryptsetup/cryptsetup-generator.c @@ -282,7 +282,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat crypto_device *d; _cleanup_free_ char *uuid = NULL, *uuid_value = NULL; - if (STR_IN_SET(key, "luks", "rd.luks") && value) { + if (streq(key, "luks") && value) { r = parse_boolean(value); if (r < 0) @@ -290,7 +290,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat else arg_enabled = r; - } else if (STR_IN_SET(key, "luks.crypttab", "rd.luks.crypttab") && value) { + } else if (streq(key, "luks.crypttab") && value) { r = parse_boolean(value); if (r < 0) @@ -298,7 +298,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat else arg_read_crypttab = r; - } else if (STR_IN_SET(key, "luks.uuid", "rd.luks.uuid") && value) { + } else if (streq(key, "luks.uuid") && value) { d = get_crypto_device(startswith(value, "luks-") ? value+5 : value); if (!d) @@ -306,7 +306,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat d->create = arg_whitelist = true; - } else if (STR_IN_SET(key, "luks.options", "rd.luks.options") && value) { + } else if (streq(key, "luks.options") && value) { r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value); if (r == 2) { @@ -320,7 +320,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat } else if (free_and_strdup(&arg_default_options, value) < 0) return log_oom(); - } else if (STR_IN_SET(key, "luks.key", "rd.luks.key") && value) { + } else if (streq(key, "luks.key") && value) { r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value); if (r == 2) { @@ -334,7 +334,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat } else if (free_and_strdup(&arg_default_keyfile, value) < 0) return log_oom(); - } else if (STR_IN_SET(key, "luks.name", "rd.luks.name") && value) { + } else if (streq(key, "luks.name") && value) { r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value); if (r == 2) { @@ -478,7 +478,7 @@ int main(int argc, char *argv[]) { if (!arg_disks) goto cleanup; - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); if (r < 0) { log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); r = EXIT_FAILURE; diff --git a/src/debug-generator/debug-generator.c b/src/debug-generator/debug-generator.c index 0b0de1b461..7f11ec724d 100644 --- a/src/debug-generator/debug-generator.c +++ b/src/debug-generator/debug-generator.c @@ -178,7 +178,7 @@ int main(int argc, char *argv[]) { goto finish; } - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/fsck/fsck.c b/src/fsck/fsck.c index 957e0ccef8..be25c6a2b2 100644 --- a/src/fsck/fsck.c +++ b/src/fsck/fsck.c @@ -293,7 +293,7 @@ int main(int argc, char *argv[]) { umask(0022); - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c index b608eff630..e77bd71a52 100644 --- a/src/fstab-generator/fstab-generator.c +++ b/src/fstab-generator/fstab-generator.c @@ -674,7 +674,7 @@ int main(int argc, char *argv[]) { umask(0022); - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c index a25b3413ae..a098b27a8e 100644 --- a/src/gpt-auto-generator/gpt-auto-generator.c +++ b/src/gpt-auto-generator/gpt-auto-generator.c @@ -1018,7 +1018,7 @@ int main(int argc, char *argv[]) { return EXIT_SUCCESS; } - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/hibernate-resume/hibernate-resume-generator.c b/src/hibernate-resume/hibernate-resume-generator.c index 8be461aafa..17e670604e 100644 --- a/src/hibernate-resume/hibernate-resume-generator.c +++ b/src/hibernate-resume/hibernate-resume-generator.c @@ -88,7 +88,7 @@ int main(int argc, char *argv[]) { if (!in_initrd()) return EXIT_SUCCESS; - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c index e7dcbba04f..76c9baf6db 100644 --- a/src/journal/journald-server.c +++ b/src/journal/journald-server.c @@ -1900,7 +1900,7 @@ int server_init(Server *s) { journal_reset_metrics(&s->runtime_storage.metrics); server_parse_config_file(s); - parse_proc_cmdline(parse_proc_cmdline_item, s); + parse_proc_cmdline(parse_proc_cmdline_item, s, true); if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c index bd07bad446..0901fea8dc 100644 --- a/src/modules-load/modules-load.c +++ b/src/modules-load/modules-load.c @@ -62,7 +62,7 @@ static int add_modules(const char *p) { static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { int r; - if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) { + if (streq(key, "modules-load") && value) { r = add_modules(value); if (r < 0) return r; @@ -226,7 +226,7 @@ int main(int argc, char *argv[]) { umask(0022); - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/quotacheck/quotacheck.c b/src/quotacheck/quotacheck.c index a87b0866cd..2714cde5c7 100644 --- a/src/quotacheck/quotacheck.c +++ b/src/quotacheck/quotacheck.c @@ -88,7 +88,7 @@ int main(int argc, char *argv[]) { umask(0022); - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false); if (r < 0) log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); diff --git a/src/test/test-proc-cmdline.c b/src/test/test-proc-cmdline.c index e4207935c4..4101678f19 100644 --- a/src/test/test-proc-cmdline.c +++ b/src/test/test-proc-cmdline.c @@ -36,7 +36,7 @@ static int parse_item(const char *key, const char *value, void *data) { } static void test_parse_proc_cmdline(void) { - assert_se(parse_proc_cmdline(parse_item, &obj) >= 0); + assert_se(parse_proc_cmdline(parse_item, &obj, true) >= 0); } static void test_runlevel_to_target(void) { diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 05cd5079c1..badbab6205 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -1370,9 +1370,6 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat if (!value) return 0; - if (startswith(key, "rd.")) - key += strlen("rd."); - if (streq(key, "udev.log-priority") && value) { r = util_log_priority(value); if (r >= 0) @@ -1652,7 +1649,7 @@ int main(int argc, char *argv[]) { if (r <= 0) goto exit; - r = parse_proc_cmdline(parse_proc_cmdline_item, NULL); + r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true); if (r < 0) log_warning_errno(r, "failed to parse kernel command line, ignoring: %m");