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condition: add ConditionFileNotEmpty= 

https://bugs.freedesktop.org/show_bug.cgi?id=54448
This commit is contained in:
Lennart Poettering 2012-09-11 01:29:46 +02:00
parent b5b46d5995
commit 742a862bb8
3 changed files with 27 additions and 8 deletions
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24
man/systemd.unit.xml
View File

@ -755,6 +755,7 @@
<term><varname>ConditionPathIsMountPoint=</varname></term>
<term><varname>ConditionPathIsReadWrite=</varname></term>
<term><varname>ConditionDirectoryNotEmpty=</varname></term>
<term><varname>ConditionFileNotEmpty=</varname></term>
<term><varname>ConditionFileIsExecutable=</varname></term>
<term><varname>ConditionKernelCommandLine=</varname></term>
<term><varname>ConditionVirtualization=</varname></term>
@ -825,13 +826,6 @@
(i.e. not mounted
read-only).</para>
<para><varname>ConditionFileIsExecutable=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists, is a regular file and marked
executable.</para>
<para><varname>ConditionDirectoryNotEmpty=</varname>
is similar to
<varname>ConditionPathExists=</varname>
@ -839,7 +833,21 @@
exists and is a non-empty
directory.</para>
<para>Similarly,
<para><varname>ConditionFileNotEmpty=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists and refers to a regular file
with a non-zero size.</para>
<para><varname>ConditionFileIsExecutable=</varname>
is similar to
<varname>ConditionPathExists=</varname>
but verifies whether a certain path
exists, is a regular file and marked
executable.</para>
<para>Similar,
<varname>ConditionKernelCommandLine=</varname>
may be used to check whether a
specific kernel command line option is

10
src/core/condition.c
View File

@ -261,6 +261,15 @@ bool condition_test(Condition *c) {
return !(k == -ENOENT || k > 0) == !c->negate;
}
case CONDITION_FILE_NOT_EMPTY: {
struct stat st;
if (stat(c->parameter, &st) < 0)
return c->negate;
return (S_ISREG(st.st_mode) && st.st_size > 0) == !c->negate;
}
case CONDITION_FILE_IS_EXECUTABLE: {
struct stat st;
@ -350,6 +359,7 @@ static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
[CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
[CONDITION_PATH_IS_READ_WRITE] = "ConditionPathIsReadWrite",
[CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
[CONDITION_FILE_NOT_EMPTY] = "ConditionFileNotEmpty",
[CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
[CONDITION_VIRTUALIZATION] = "ConditionVirtualization",
[CONDITION_SECURITY] = "ConditionSecurity",

1
src/core/condition.h
View File

@ -33,6 +33,7 @@ typedef enum ConditionType {
CONDITION_PATH_IS_MOUNT_POINT,
CONDITION_PATH_IS_READ_WRITE,
CONDITION_DIRECTORY_NOT_EMPTY,
CONDITION_FILE_NOT_EMPTY,
CONDITION_FILE_IS_EXECUTABLE,
CONDITION_KERNEL_COMMAND_LINE,
CONDITION_VIRTUALIZATION,