|
 |
65878a |
From b6fbffe3d4a9435cc8560ee0271c7e6e763e89c1 Mon Sep 17 00:00:00 2001
|
|
|
65878a |
From: Harald Hoyer <harald@redhat.com>
|
|
|
65878a |
Date: Thu, 6 Mar 2014 09:12:57 +0100
|
|
|
65878a |
Subject: [PATCH] util: add files_same() helper function
|
|
|
65878a |
|
|
|
65878a |
files_same() returns
|
|
|
65878a |
1, if the files are the same
|
|
|
65878a |
0, if the files have different inode/dev numbers
|
|
|
65878a |
errno, for any stat error
|
|
|
65878a |
|
|
|
65878a |
(cherry picked from commit 9d9951a460a90ef0e1e0384742cefdcf85193f8c)
|
|
|
65878a |
|
|
|
65878a |
Related: #1111199
|
|
|
65878a |
---
|
|
|
65878a |
src/shared/util.c | 24 ++++++++++++++++--------
|
|
|
65878a |
src/shared/util.h | 2 ++
|
|
|
65878a |
2 files changed, 18 insertions(+), 8 deletions(-)
|
|
|
65878a |
|
|
|
65878a |
diff --git a/src/shared/util.c b/src/shared/util.c
|
|
|
65878a |
index 2974c2a..fb1e6d1 100644
|
|
|
65878a |
--- a/src/shared/util.c
|
|
|
65878a |
+++ b/src/shared/util.c
|
|
|
65878a |
@@ -3311,19 +3311,27 @@ bool on_tty(void) {
|
|
|
65878a |
return cached_on_tty;
|
|
|
65878a |
}
|
|
|
65878a |
|
|
|
65878a |
-int running_in_chroot(void) {
|
|
|
65878a |
- struct stat a = {}, b = {};
|
|
|
65878a |
+int files_same(const char *filea, const char *fileb) {
|
|
|
65878a |
+ struct stat a, b;
|
|
|
65878a |
|
|
|
65878a |
- /* Only works as root */
|
|
|
65878a |
- if (stat("/proc/1/root", &a) < 0)
|
|
|
65878a |
+ if (stat(filea, &a) < 0)
|
|
|
65878a |
return -errno;
|
|
|
65878a |
|
|
|
65878a |
- if (stat("/", &b) < 0)
|
|
|
65878a |
+ if (stat(fileb, &b) < 0)
|
|
|
65878a |
return -errno;
|
|
|
65878a |
|
|
|
65878a |
- return
|
|
|
65878a |
- a.st_dev != b.st_dev ||
|
|
|
65878a |
- a.st_ino != b.st_ino;
|
|
|
65878a |
+ return a.st_dev == b.st_dev &&
|
|
|
65878a |
+ a.st_ino == b.st_ino;
|
|
|
65878a |
+}
|
|
|
65878a |
+
|
|
|
65878a |
+int running_in_chroot(void) {
|
|
|
65878a |
+ int ret;
|
|
|
65878a |
+
|
|
|
65878a |
+ ret = files_same("/proc/1/root", "/");
|
|
|
65878a |
+ if (ret < 0)
|
|
|
65878a |
+ return ret;
|
|
|
65878a |
+
|
|
|
65878a |
+ return ret == 0;
|
|
|
65878a |
}
|
|
|
65878a |
|
|
|
65878a |
char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent) {
|
|
|
65878a |
diff --git a/src/shared/util.h b/src/shared/util.h
|
|
|
65878a |
index e577ef0..631a385 100644
|
|
|
65878a |
--- a/src/shared/util.h
|
|
|
65878a |
+++ b/src/shared/util.h
|
|
|
65878a |
@@ -403,6 +403,8 @@ static inline const char *ansi_highlight_off(void) {
|
|
|
65878a |
return on_tty() ? ANSI_HIGHLIGHT_OFF : "";
|
|
|
65878a |
}
|
|
|
65878a |
|
|
|
65878a |
+int files_same(const char *filea, const char *fileb);
|
|
|
65878a |
+
|
|
|
65878a |
int running_in_chroot(void);
|
|
|
65878a |
|
|
|
65878a |
char *ellipsize(const char *s, size_t length, unsigned percent);
|