lvm2: separate libdevmapper to avoid circular dependency

If we enable 'cryptsetup' PACKAGECONFIG for systemd, there would be
circular dependency issue among 'systemd', 'cryptsetup' and 'lvm2'.

cryptsetup only needs libdevmapper from lvm2. So we separte libdevmapper
into a new recipe to solve this circular dependency issue.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/meta-oe/recipes-support/lvm2/files/0001-implement-libc-specific-reopen_stream.patch b/meta-oe/recipes-support/lvm2/files/0001-implement-libc-specific-reopen_stream.patch
new file mode 100644
index 0000000000..5d72402bd1
--- /dev/null
+++ b/meta-oe/recipes-support/lvm2/files/0001-implement-libc-specific-reopen_stream.patch
@@ -0,0 +1,79 @@
+From e3103459416616d3b8508e7176e897b0ae6c90f2 Mon Sep 17 00:00:00 2001
+From: Dengke Du <dengke.du@windriver.com>
+Date: Tue, 25 Oct 2016 11:49:40 +0000
+Subject: [PATCH] implement libc specific reopen_stream
+
+musl defines stdin/stdio/stderr as constant types which means
+we can not assign to them as we are doing here but works ok with glibc
+therefore abstract out the _reopen_stream definition depending upon if
+we are using glibc or otherwise
+
+Origin:
+http://git.alpinelinux.org/cgit/aports/tree/main/lvm2/fix-stdio-usage.patch
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Dengke Du <dengke.du@windriver.com>
+
+---
+ lib/log/log.c      | 6 ++++++
+ tools/lvmcmdline.c | 6 +++---
+ 2 files changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/lib/log/log.c b/lib/log/log.c
+index c933154..3581084 100644
+--- a/lib/log/log.c
++++ b/lib/log/log.c
+@@ -161,6 +161,7 @@ static void _check_and_replace_standard_log_streams(FILE *old_stream, FILE *new_
+  * Close and reopen standard stream on file descriptor fd.
+  */
+ int reopen_standard_stream(FILE **stream, const char *mode)
++#ifdef __GLIBC__
+ {
+        int fd, fd_copy, new_fd;
+        const char *name;
+@@ -207,6 +208,11 @@ int reopen_standard_stream(FILE **stream, const char *mode)
+        *stream = new_stream;
+        return 1;
+ }
++#else
++{
++       return (freopen(NULL, mode, *stream) != NULL);
++}
++#endif
+ 
+ void init_log_fn(lvm2_log_fn_t log_fn)
+ {
+diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
+index 9a4deb7..f1f18e6 100644
+--- a/tools/lvmcmdline.c
++++ b/tools/lvmcmdline.c
+@@ -1818,7 +1818,7 @@ static int _check_standard_fds(void)
+        int err = is_valid_fd(STDERR_FILENO);
+ 
+        if (!is_valid_fd(STDIN_FILENO) &&
+-           !(stdin = fopen(_PATH_DEVNULL, "r"))) {
++           !freopen(_PATH_DEVNULL, "r", stdin)) {
+                if (err)
+                        perror("stdin stream open");
+                else
+@@ -1828,7 +1828,7 @@ static int _check_standard_fds(void)
+        }
+ 
+        if (!is_valid_fd(STDOUT_FILENO) &&
+-           !(stdout = fopen(_PATH_DEVNULL, "w"))) {
++           !freopen(_PATH_DEVNULL, "w", stdout)) {
+                if (err)
+                        perror("stdout stream open");
+                /* else no stdout */
+@@ -1836,7 +1836,7 @@ static int _check_standard_fds(void)
+        }
+ 
+        if (!is_valid_fd(STDERR_FILENO) &&
+-           !(stderr = fopen(_PATH_DEVNULL, "w"))) {
++           !freopen(_PATH_DEVNULL, "w", stderr)) {
+                printf("stderr stream open: %s\n",
+                       strerror(errno));
+                return 0;
+-- 
+2.12.0
+