diff options
author | Lennart Poettering <lennart@poettering.net> | 2014-10-28 14:24:46 +0100 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2014-10-28 14:31:25 +0100 |
commit | 47cb901e38cd7092576fc8e76cc4a14f39bf719d (patch) | |
tree | 7ca11b696f63e7ce2467139c455c89a47487101d /src/core | |
parent | 33488f19793dc0a86fdee27266c5319b5b78d695 (diff) |
swap: replace Discard= setting by a more generic Options= setting
For now, it's systemd itself that parses the options string, but as soon
as util-linux' swapon can take the option string directly with -o we
should pass it on unmodified.
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/dbus-swap.c | 13 | ||||
-rw-r--r-- | src/core/load-fragment-gperf.gperf.m4 | 2 | ||||
-rw-r--r-- | src/core/swap.c | 91 | ||||
-rw-r--r-- | src/core/swap.h | 2 |
4 files changed, 87 insertions, 21 deletions
diff --git a/src/core/dbus-swap.c b/src/core/dbus-swap.c index c854716b48..1e7f66d053 100644 --- a/src/core/dbus-swap.c +++ b/src/core/dbus-swap.c @@ -55,7 +55,7 @@ static int property_get_priority( return sd_bus_message_append(reply, "i", p); } -static int property_get_discard( +static int property_get_options( sd_bus *bus, const char *path, const char *interface, @@ -65,17 +65,16 @@ static int property_get_discard( sd_bus_error *error) { Swap *s = SWAP(userdata); - const char *p; + const char *options = NULL; assert(bus); assert(reply); assert(s); if (s->from_fragment) - p = s->parameters_fragment.discard ?: "none"; - else - p = "none"; - return sd_bus_message_append(reply, "s", p); + options = s->parameters_fragment.options; + + return sd_bus_message_append(reply, "s", options); } static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, swap_result, SwapResult); @@ -84,7 +83,7 @@ const sd_bus_vtable bus_swap_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("What", "s", NULL, offsetof(Swap, what), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("Priority", "i", property_get_priority, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("Discard", "s", property_get_discard, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("Options", "s", property_get_options, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Swap, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Swap, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Swap, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), diff --git a/src/core/load-fragment-gperf.gperf.m4 b/src/core/load-fragment-gperf.gperf.m4 index 26d40fbc6d..ca0139479b 100644 --- a/src/core/load-fragment-gperf.gperf.m4 +++ b/src/core/load-fragment-gperf.gperf.m4 @@ -299,7 +299,7 @@ Automount.DirectoryMode, config_parse_mode, 0, m4_dnl Swap.What, config_parse_path, 0, offsetof(Swap, parameters_fragment.what) Swap.Priority, config_parse_int, 0, offsetof(Swap, parameters_fragment.priority) -Swap.Discard, config_parse_string, 0, offsetof(Swap, parameters_fragment.discard) +Swap.Options, config_parse_string, 0, offsetof(Swap, parameters_fragment.options) Swap.TimeoutSec, config_parse_sec, 0, offsetof(Swap, timeout_usec) EXEC_CONTEXT_CONFIG_ITEMS(Swap)m4_dnl CGROUP_CONTEXT_CONFIG_ITEMS(Swap)m4_dnl diff --git a/src/core/swap.c b/src/core/swap.c index b2ca048bcb..1204386cdb 100644 --- a/src/core/swap.c +++ b/src/core/swap.c @@ -152,8 +152,8 @@ static void swap_done(Unit *u) { free(s->parameters_fragment.what); s->parameters_fragment.what = NULL; - free(s->parameters_fragment.discard); - s->parameters_fragment.discard = NULL; + free(s->parameters_fragment.options); + s->parameters_fragment.options = NULL; s->exec_runtime = exec_runtime_unref(s->exec_runtime); exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); @@ -608,11 +608,11 @@ static void swap_dump(Unit *u, FILE *f, const char *prefix) { "%sPriority: %i\n" "%sNoAuto: %s\n" "%sNoFail: %s\n" - "%sDiscard: %s\n", + "%sOptions: %s\n", prefix, p->priority, prefix, yes_no(p->noauto), prefix, yes_no(p->nofail), - prefix, p->discard ?: "none"); + prefix, strempty(p->options)); if (s->control_pid > 0) fprintf(f, @@ -739,9 +739,74 @@ fail: swap_enter_dead(s, SWAP_FAILURE_RESOURCES); } +static int mount_find_pri(const char *options, int *ret) { + const char *opt; + char *end; + unsigned long r; + + assert(ret); + + if (!options) + return 0; + + opt = mount_test_option(options, "pri"); + if (!opt) + return 0; + + opt += strlen("pri"); + if (*opt != '=') + return -EINVAL; + + errno = 0; + r = strtoul(opt + 1, &end, 10); + if (errno > 0) + return -errno; + + if (end == opt + 1 || (*end != ',' && *end != 0)) + return -EINVAL; + + *ret = (int) r; + return 1; +} + +static int mount_find_discard(const char *options, char **ret) { + const char *opt; + char *ans; + size_t len; + + assert(ret); + + if (!options) + return 0; + + opt = mount_test_option(options, "discard"); + if (!opt) + return 0; + + opt += strlen("discard"); + if (*opt == ',' || *opt == '\0') + ans = strdup("all"); + else { + if (*opt != '=') + return -EINVAL; + + len = strcspn(opt + 1, ","); + if (len == 0) + return -EINVAL; + + ans = strndup(opt + 1, len); + } + + if (!ans) + return -ENOMEM; + + *ret = ans; + return 1; +} + static void swap_enter_activating(Swap *s) { - int r, priority; - char *discard; + _cleanup_free_ char *discard = NULL; + int r, priority = -1; assert(s); @@ -749,11 +814,11 @@ static void swap_enter_activating(Swap *s) { s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE; if (s->from_fragment) { + mount_find_discard(s->parameters_fragment.options, &discard); + priority = s->parameters_fragment.priority; - discard = s->parameters_fragment.discard; - } else { - priority = -1; - discard = NULL; + if (priority < 0) + mount_find_pri(s->parameters_fragment.options, &priority); } r = exec_command_set(s->control_command, "/sbin/swapon", NULL); @@ -770,9 +835,11 @@ static void swap_enter_activating(Swap *s) { } if (discard && !streq(discard, "none")) { - const char *discard_arg = "--discard"; + const char *discard_arg; - if (!streq(discard, "all")) + if (streq(discard, "all")) + discard_arg = "--discard"; + else discard_arg = strappenda("--discard=", discard); r = exec_command_append(s->control_command, discard_arg, NULL); diff --git a/src/core/swap.h b/src/core/swap.h index 3482d651ec..053c8492b2 100644 --- a/src/core/swap.h +++ b/src/core/swap.h @@ -63,7 +63,7 @@ typedef enum SwapResult { typedef struct SwapParameters { char *what; - char *discard; + char *options; int priority; bool noauto:1; bool nofail:1; |