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unit: introduce ConditionPathIsMountPoint=

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This commit is contained in:
Lennart Poettering 2011-09-21 00:44:51 +02:00
parent 418112a296
commit ab7f148f81
6 changed files with 45 additions and 19 deletions
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2
TODO
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@ -13,6 +13,8 @@ Bugfixes:
Features:
* introduce sd_log_open() to create a connection to the syslog bridge via sd-daemon.h
* when a bus name of a service disappears from the bus make sure to queue further activation requests
* something like ConditionExec= or ExecStartPre= without failure state

29
man/systemd.unit.xml
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@ -665,6 +665,7 @@
<term><varname>ConditionPathExists=</varname></term>
<term><varname>ConditionPathExistsGlob=</varname></term>
<term><varname>ConditionPathIsDirectory=</varname></term>
<term><varname>ConditionPathIsMountPoint=</varname></term>
<term><varname>ConditionDirectoryNotEmpty=</varname></term>
<term><varname>ConditionFileIsExecutable=</varname></term>
<term><varname>ConditionKernelCommandLine=</varname></term>
@ -695,16 +696,24 @@
works in a similar way, but checks for
the existence of at least one file or
directory matching the specified
globbing pattern.
<varname>ConditionPathIsDirectory=</varname>
is similar to <varname>ConditionPathExists=</varname>
but verifies whether a certain path exists and
is a directory. It does not follow symlinks.
<varname>ConditionFileIsExecutable=</varname>
is similar to <varname>ConditionPathExists=</varname>
but verifies whether a certain path exists,
is a regular file and marked executable.
It follows symlinks.
globbing
pattern. <varname>ConditionPathIsDirectory=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists and is a directory. It does not
follow
symlinks. <varname>ConditionPathIsMountPoint=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists and is a mount
point. <varname>ConditionFileIsExecutable=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists, is a regular file and marked
executable. It follows symlinks.
<varname>ConditionDirectoryNotEmpty=</varname>
is similar to
<varname>ConditionPathExists=</varname>

22
src/condition.c
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@ -36,18 +36,21 @@ Condition* condition_new(ConditionType type, const char *parameter, bool trigger
assert(type < _CONDITION_TYPE_MAX);
if (!(c = new0(Condition, 1)))
c = new0(Condition, 1);
if (!c)
return NULL;
c->type = type;
c->trigger = trigger;
c->negate = negate;
if (parameter)
if (!(c->parameter = strdup(parameter))) {
if (parameter) {
c->parameter = strdup(parameter);
if (!c->parameter) {
free(c);
return NULL;
}
}
return c;
}
@ -78,7 +81,8 @@ static bool test_kernel_command_line(const char *parameter) {
if (detect_container(NULL) > 0)
return false;
if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
r = read_one_line_file("/proc/cmdline", &line);
if (r < 0) {
log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
return false;
}
@ -89,7 +93,8 @@ static bool test_kernel_command_line(const char *parameter) {
FOREACH_WORD_QUOTED(w, l, line, state) {
free(word);
if (!(word = strndup(w, l)))
word = strndup(w, l);
if (!word)
break;
if (equal) {
@ -118,7 +123,8 @@ static bool test_virtualization(const char *parameter) {
assert(parameter);
if ((r = detect_virtualization(&id)) < 0) {
r = detect_virtualization(&id);
if (r < 0) {
log_warning("Failed to detect virtualization, ignoring: %s", strerror(-r));
return false;
}
@ -161,6 +167,9 @@ bool condition_test(Condition *c) {
return S_ISDIR(st.st_mode) == !c->negate;
}
case CONDITION_PATH_IS_MOUNT_POINT:
return (path_is_mount_point(c->parameter, true) > 0) == !c->negate;
case CONDITION_DIRECTORY_NOT_EMPTY: {
int k;
@ -247,6 +256,7 @@ static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
[CONDITION_PATH_EXISTS] = "ConditionPathExists",
[CONDITION_PATH_EXISTS_GLOB] = "ConditionPathExistsGlob",
[CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
[CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
[CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
[CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
[CONDITION_VIRTUALIZATION] = "ConditionVirtualization",

1
src/condition.h
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@ -30,6 +30,7 @@ typedef enum ConditionType {
CONDITION_PATH_EXISTS,
CONDITION_PATH_EXISTS_GLOB,
CONDITION_PATH_IS_DIRECTORY,
CONDITION_PATH_IS_MOUNT_POINT,
CONDITION_DIRECTORY_NOT_EMPTY,
CONDITION_FILE_IS_EXECUTABLE,
CONDITION_KERNEL_COMMAND_LINE,

1
src/load-fragment-gperf.gperf.m4
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@ -112,6 +112,7 @@ Unit.JobTimeoutSec, config_parse_usec, 0,
Unit.ConditionPathExists, config_parse_unit_condition_path, CONDITION_PATH_EXISTS, 0
Unit.ConditionPathExistsGlob, config_parse_unit_condition_path, CONDITION_PATH_EXISTS_GLOB, 0
Unit.ConditionPathIsDirectory, config_parse_unit_condition_path, CONDITION_PATH_IS_DIRECTORY, 0
Unit.ConditionPathIsMountPoint, config_parse_unit_condition_path, CONDITION_PATH_IS_MOUNT_POINT, 0
Unit.ConditionDirectoryNotEmpty, config_parse_unit_condition_path, CONDITION_DIRECTORY_NOT_EMPTY, 0
Unit.ConditionFileIsExecutable, config_parse_unit_condition_path, CONDITION_FILE_IS_EXECUTABLE, 0
Unit.ConditionKernelCommandLine, config_parse_unit_condition_string, CONDITION_KERNEL_COMMAND_LINE, 0

9
src/load-fragment.c
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@ -1545,10 +1545,12 @@ int config_parse_unit_condition_path(
assert(rvalue);
assert(data);
if ((trigger = rvalue[0] == '|'))
trigger = rvalue[0] == '|';
if (trigger)
rvalue++;
if ((negate = rvalue[0] == '!'))
negate = rvalue[0] == '!';
if (negate)
rvalue++;
if (!path_is_absolute(rvalue)) {
@ -1556,7 +1558,8 @@ int config_parse_unit_condition_path(
return 0;
}
if (!(c = condition_new(cond, rvalue, trigger, negate)))
c = condition_new(cond, rvalue, trigger, negate);
if (!c)
return -ENOMEM;
LIST_PREPEND(Condition, conditions, u->meta.conditions, c);