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authorHarald Hoyer <harald@redhat.com>2012-05-16 14:22:40 +0200
committerLennart Poettering <lennart@poettering.net>2012-05-21 18:47:39 +0200
commit9be346c94eab9de0edc30f08b6c6d070c3a17c79 (patch)
tree6bfc4dcb12616611f9b6b6abdcb0b6df333dcdf9
parentf67cc036ba92a3c71acb664ed2d548de5827cf1f (diff)
util.c: add in_initrd()
in_initrd() checks, if the stat() for the device for "/" is 1, which it is for the initramfs.
-rw-r--r--src/shared/util.c15
-rw-r--r--src/shared/util.h1
2 files changed, 16 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index 53185403d6..681484bc0f 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -5639,3 +5639,18 @@ bool is_valid_documentation_url(const char *url) {
return false;
}
+
+bool in_initrd(void) {
+ static bool checked=false;
+ static bool is_in_initrd=false;
+
+ if (!checked) {
+ struct stat sb;
+ if (stat("/", &sb) == 0) {
+ is_in_initrd = (sb.st_dev == 1);
+ checked = true;
+ }
+ }
+
+ return is_in_initrd;
+}
diff --git a/src/shared/util.h b/src/shared/util.h
index 0af0299dbb..4fccf96a6d 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -512,4 +512,5 @@ int can_sleep(const char *type);
bool is_valid_documentation_url(const char *url);
+bool in_initrd(void);
#endif