summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/sd-daemon.c38
-rw-r--r--src/sd-daemon.h14
-rw-r--r--src/sd-readahead.c76
-rw-r--r--src/sd-readahead.h81
4 files changed, 161 insertions, 48 deletions
diff --git a/src/sd-daemon.c b/src/sd-daemon.c
index 316fccc50a..9c23b917f9 100644
--- a/src/sd-daemon.c
+++ b/src/sd-daemon.c
@@ -433,41 +433,3 @@ int sd_booted(void) {
return a.st_dev != b.st_dev;
#endif
}
-
-static int touch(const char *path) {
-
-#if !defined(DISABLE_SYSTEMD) && defined(__linux__)
- int fd;
-
- mkdir("/dev/.systemd", 0755);
- mkdir("/dev/.systemd/readahead", 0755);
-
- if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666)) < 0)
- return -errno;
-
- for (;;) {
- if (close(fd) >= 0)
- break;
-
- if (errno != -EINTR)
- return -errno;
- }
-
-#endif
- return 0;
-}
-
-int sd_readahead(const char *action) {
-
- if (!action)
- return -EINVAL;
-
- if (strcmp(action, "cancel") == 0)
- return touch("/dev/.systemd/readahead/cancel");
- else if (strcmp(action, "done") == 0)
- return touch("/dev/.systemd/readahead/done");
- else if (strcmp(action, "noreplay") == 0)
- return touch("/dev/.systemd/readahead/noreplay");
-
- return -EINVAL;
-}
diff --git a/src/sd-daemon.h b/src/sd-daemon.h
index 2fbfe955ce..fdf3cc0354 100644
--- a/src/sd-daemon.h
+++ b/src/sd-daemon.h
@@ -67,17 +67,21 @@ extern "C" {
See sd-daemon(7) for more information.
*/
+#ifndef _sd_printf_attr_
#if __GNUC__ >= 4
#define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
#else
#define _sd_printf_attr_(a,b)
#endif
+#endif
+#ifndef _sd_hidden_
#if (__GNUC__ >= 4) && !defined(SD_EXPORT_SYMBOLS)
#define _sd_hidden_ __attribute__ ((visibility("hidden")))
#else
#define _sd_hidden_
#endif
+#endif
/*
Log levels for usage on stderr:
@@ -254,16 +258,6 @@ int sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_(
*/
int sd_booted(void) _sd_hidden_;
-/*
- Controls ongoing disk read-ahead operations during boot-up. The argument
- must be a string, and either "cancel", "done" or "noreplay".
-
- cancel = terminate read-ahead data collection, drop collected information
- done = terminate read-ahead data collection, keep collected information
- noreplay = terminate read-ahead replay
-*/
-int sd_readahead(const char *action);
-
#ifdef __cplusplus
}
#endif
diff --git a/src/sd-readahead.c b/src/sd-readahead.c
new file mode 100644
index 0000000000..41e6d3d20e
--- /dev/null
+++ b/src/sd-readahead.c
@@ -0,0 +1,76 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ Copyright 2010 Lennart Poettering
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation files
+ (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge,
+ publish, distribute, sublicense, and/or sell copies of the Software,
+ and to permit persons to whom the Software is furnished to do so,
+ subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+***/
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "sd-readahead.h"
+
+static int touch(const char *path) {
+
+#if !defined(DISABLE_SYSTEMD) && defined(__linux__)
+ int fd;
+
+ mkdir("/dev/.systemd", 0755);
+ mkdir("/dev/.systemd/readahead", 0755);
+
+ if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666)) < 0)
+ return -errno;
+
+ for (;;) {
+ if (close(fd) >= 0)
+ break;
+
+ if (errno != -EINTR)
+ return -errno;
+ }
+
+#endif
+ return 0;
+}
+
+int sd_readahead(const char *action) {
+
+ if (!action)
+ return -EINVAL;
+
+ if (strcmp(action, "cancel") == 0)
+ return touch("/dev/.systemd/readahead/cancel");
+ else if (strcmp(action, "done") == 0)
+ return touch("/dev/.systemd/readahead/done");
+ else if (strcmp(action, "noreplay") == 0)
+ return touch("/dev/.systemd/readahead/noreplay");
+
+ return -EINVAL;
+}
diff --git a/src/sd-readahead.h b/src/sd-readahead.h
new file mode 100644
index 0000000000..5bf975a741
--- /dev/null
+++ b/src/sd-readahead.h
@@ -0,0 +1,81 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foosdreadaheadhfoo
+#define foosdreadaheadhfoo
+
+/***
+ Copyright 2010 Lennart Poettering
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation files
+ (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge,
+ publish, distribute, sublicense, and/or sell copies of the Software,
+ and to permit persons to whom the Software is furnished to do so,
+ subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+***/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ Reference implementation of a few boot readahead related
+ interfaces. These interfaces are trivial to implement. To simplify
+ porting we provide this reference implementation. Applications are
+ welcome to reimplement the algorithms described here if they do not
+ want to include these two source files.
+
+ You may compile this with -DDISABLE_SYSTEMD to disable systemd
+ support. This makes all calls NOPs.
+
+ Since this is drop-in code we don't want any of our symbols to be
+ exported in any case. Hence we declare hidden visibility for all of
+ them.
+
+ You may find an up-to-date version of these source files online:
+
+ http://cgit.freedesktop.org/systemd/plain/src/sd-readahead.h
+ http://cgit.freedesktop.org/systemd/plain/src/sd-readahead.c
+
+ This should compile on non-Linux systems, too, but all functions
+ will become NOPs.
+
+ See sd-readahead(7) for more information.
+*/
+
+#ifndef _sd_hidden_
+#if (__GNUC__ >= 4) && !defined(SD_EXPORT_SYMBOLS)
+#define _sd_hidden_ __attribute__ ((visibility("hidden")))
+#else
+#define _sd_hidden_
+#endif
+#endif
+
+/*
+ Controls ongoing disk read-ahead operations during boot-up. The argument
+ must be a string, and either "cancel", "done" or "noreplay".
+
+ cancel = terminate read-ahead data collection, drop collected information
+ done = terminate read-ahead data collection, keep collected information
+ noreplay = terminate read-ahead replay
+*/
+int sd_readahead(const char *action) _sd_hidden_;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-19 10:23:46 +0000