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unit: introduce ConditionPathIsReadWrite

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This commit is contained in:
Lennart Poettering 2012-04-12 02:39:02 +02:00
parent f33d3ec1d7
commit d051610953
4 changed files with 28 additions and 7 deletions
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22
man/systemd.unit.xml
View File

@ -684,6 +684,7 @@
<term><varname>ConditionPathIsDirectory=</varname></term>
<term><varname>ConditionPathIsSymbolicLink=</varname></term>
<term><varname>ConditionPathIsMountPoint=</varname></term>
<term><varname>ConditionPathIsReadWrite=</varname></term>
<term><varname>ConditionDirectoryNotEmpty=</varname></term>
<term><varname>ConditionFileIsExecutable=</varname></term>
<term><varname>ConditionKernelCommandLine=</varname></term>
@ -731,7 +732,13 @@
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists and is a mount
point. <varname>ConditionFileIsExecutable=</varname>
point. <varname>ConditionPathIsReadWrite=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether the underlying
file system is read and writable
(i.e. not mounted
read-only). <varname>ConditionFileIsExecutable=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
@ -780,12 +787,13 @@
<varname>openvz</varname>,
<varname>lxc</varname>,
<varname>lxc-libvirt</varname>,
<varname>systemd-nspawn</varname> to test
against a specific implementation. If
multiple virtualization technologies
are nested only the innermost is
considered. The test may be negated by
prepending an exclamation mark.
<varname>systemd-nspawn</varname> to
test against a specific
implementation. If multiple
virtualization technologies are nested
only the innermost is considered. The
test may be negated by prepending an
exclamation mark.
<varname>ConditionSecurity=</varname>
may be used to check whether the given
security module is enabled on the

11
src/core/condition.c
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@ -24,6 +24,7 @@
#include <string.h>
#include <unistd.h>
#include <sys/capability.h>
#include <sys/statvfs.h>
#ifdef HAVE_SELINUX
#include <selinux/selinux.h>
@ -222,6 +223,15 @@ bool condition_test(Condition *c) {
case CONDITION_PATH_IS_MOUNT_POINT:
return (path_is_mount_point(c->parameter, true) > 0) == !c->negate;
case CONDITION_PATH_IS_READ_WRITE: {
struct statvfs st;
if (statvfs(c->parameter, &st) < 0)
return c->negate;
return !(st.f_flag & ST_RDONLY) == !c->negate;
}
case CONDITION_DIRECTORY_NOT_EMPTY: {
int k;
@ -313,6 +323,7 @@ static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
[CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
[CONDITION_PATH_IS_SYMBOLIC_LINK] = "ConditionPathIsSymbolicLink",
[CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
[CONDITION_PATH_IS_READ_WRITE] = "ConditionPathIsReadWrite",
[CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
[CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
[CONDITION_VIRTUALIZATION] = "ConditionVirtualization",

1
src/core/condition.h
View File

@ -32,6 +32,7 @@ typedef enum ConditionType {
CONDITION_PATH_IS_DIRECTORY,
CONDITION_PATH_IS_SYMBOLIC_LINK,
CONDITION_PATH_IS_MOUNT_POINT,
CONDITION_PATH_IS_READ_WRITE,
CONDITION_DIRECTORY_NOT_EMPTY,
CONDITION_FILE_IS_EXECUTABLE,
CONDITION_KERNEL_COMMAND_LINE,

1
src/load-fragment-gperf.gperf.m4
View File

@ -118,6 +118,7 @@ Unit.ConditionPathExistsGlob, config_parse_unit_condition_path, CONDITION_P
Unit.ConditionPathIsDirectory, config_parse_unit_condition_path, CONDITION_PATH_IS_DIRECTORY, 0
Unit.ConditionPathIsSymbolicLink,config_parse_unit_condition_path, CONDITION_PATH_IS_SYMBOLIC_LINK,0
Unit.ConditionPathIsMountPoint, config_parse_unit_condition_path, CONDITION_PATH_IS_MOUNT_POINT, 0
Unit.ConditionPathIsReadWrite, config_parse_unit_condition_path, CONDITION_PATH_IS_READ_WRITE, 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