|
 |
39700a |
From 4ebb0b512d9cf934ace9478fde7890cebb33f56d Mon Sep 17 00:00:00 2001
|
|
|
39700a |
From: Peter Jones <pjones@redhat.com>
|
|
|
39700a |
Date: Wed, 3 Sep 2014 10:38:00 -0400
|
|
|
39700a |
Subject: [PATCH 145/145] Make editenv chase symlinks including those across
|
|
|
39700a |
devices.
|
|
|
39700a |
|
|
|
39700a |
This lets us make /boot/grub2/grubenv a symlink to
|
|
|
39700a |
/boot/efi/EFI/fedora/grubenv even though they're different mount points,
|
|
|
39700a |
which allows /usr/bin/grub2-editenv to be the same across platforms
|
|
|
39700a |
(i.e. UEFI vs BIOS).
|
|
|
39700a |
|
|
|
39700a |
Signed-off-by: Peter Jones <pjones@redhat.com>
|
|
|
39700a |
Reviewed-by: Adam Jackson <ajax@redhat.com>
|
|
|
39700a |
---
|
|
|
39700a |
Makefile.util.def | 9 +++++++++
|
|
|
39700a |
util/editenv.c | 46 ++++++++++++++++++++++++++++++++++++++++++++--
|
|
|
39700a |
2 files changed, 53 insertions(+), 2 deletions(-)
|
|
|
39700a |
|
|
|
39700a |
diff --git a/Makefile.util.def b/Makefile.util.def
|
|
|
39700a |
index 8f40e78..87029a1 100644
|
|
|
39700a |
--- a/Makefile.util.def
|
|
|
39700a |
+++ b/Makefile.util.def
|
|
|
39700a |
@@ -228,8 +228,17 @@ program = {
|
|
|
39700a |
|
|
|
39700a |
common = util/grub-editenv.c;
|
|
|
39700a |
common = util/editenv.c;
|
|
|
39700a |
+ common = util/grub-install-common.c;
|
|
|
39700a |
common = grub-core/osdep/init.c;
|
|
|
39700a |
+ common = grub-core/osdep/compress.c;
|
|
|
39700a |
+ extra_dist = grub-core/osdep/unix/compress.c;
|
|
|
39700a |
+ extra_dist = grub-core/osdep/basic/compress.c;
|
|
|
39700a |
+ common = util/mkimage.c;
|
|
|
39700a |
+ common = grub-core/osdep/config.c;
|
|
|
39700a |
+ common = util/config.c;
|
|
|
39700a |
+ common = util/resolve.c;
|
|
|
39700a |
|
|
|
39700a |
+ ldadd = '$(LIBLZMA)';
|
|
|
39700a |
ldadd = libgrubmods.a;
|
|
|
39700a |
ldadd = libgrubgcry.a;
|
|
|
39700a |
ldadd = libgrubkern.a;
|
|
|
39700a |
diff --git a/util/editenv.c b/util/editenv.c
|
|
|
39700a |
index c6f8d22..d8d1dad 100644
|
|
|
39700a |
--- a/util/editenv.c
|
|
|
39700a |
+++ b/util/editenv.c
|
|
|
39700a |
@@ -37,6 +37,7 @@ grub_util_create_envblk_file (const char *name)
|
|
|
39700a |
FILE *fp;
|
|
|
39700a |
char *buf;
|
|
|
39700a |
char *namenew;
|
|
|
39700a |
+ char *rename_target = xstrdup(name);
|
|
|
39700a |
|
|
|
39700a |
buf = xmalloc (DEFAULT_ENVBLK_SIZE);
|
|
|
39700a |
|
|
|
39700a |
@@ -59,7 +60,48 @@ grub_util_create_envblk_file (const char *name)
|
|
|
39700a |
free (buf);
|
|
|
39700a |
fclose (fp);
|
|
|
39700a |
|
|
|
39700a |
- if (grub_util_rename (namenew, name) < 0)
|
|
|
39700a |
- grub_util_error (_("cannot rename the file %s to %s"), namenew, name);
|
|
|
39700a |
+ ssize_t size = 1;
|
|
|
39700a |
+ while (1)
|
|
|
39700a |
+ {
|
|
|
39700a |
+ char *linkbuf;
|
|
|
39700a |
+ ssize_t retsize;
|
|
|
39700a |
+
|
|
|
39700a |
+ linkbuf = xmalloc(size+1);
|
|
|
39700a |
+ retsize = grub_util_readlink (rename_target, linkbuf, size);
|
|
|
39700a |
+ if (retsize < 0 && (errno == ENOENT || errno == EINVAL))
|
|
|
39700a |
+ {
|
|
|
39700a |
+ free (linkbuf);
|
|
|
39700a |
+ break;
|
|
|
39700a |
+ }
|
|
|
39700a |
+ else if (retsize < 0)
|
|
|
39700a |
+ {
|
|
|
39700a |
+ grub_util_error (_("cannot rename the file %s to %s: %m"), namenew, name);
|
|
|
39700a |
+ free (linkbuf);
|
|
|
39700a |
+ free (namenew);
|
|
|
39700a |
+ return;
|
|
|
39700a |
+ }
|
|
|
39700a |
+ else if (retsize == size)
|
|
|
39700a |
+ {
|
|
|
39700a |
+ free(linkbuf);
|
|
|
39700a |
+ size += 128;
|
|
|
39700a |
+ continue;
|
|
|
39700a |
+ }
|
|
|
39700a |
+
|
|
|
39700a |
+ free (rename_target);
|
|
|
39700a |
+ linkbuf[retsize] = '\0';
|
|
|
39700a |
+ rename_target = linkbuf;
|
|
|
39700a |
+ }
|
|
|
39700a |
+
|
|
|
39700a |
+ int rc = grub_util_rename (namenew, rename_target);
|
|
|
39700a |
+ if (rc < 0 && errno == EXDEV)
|
|
|
39700a |
+ {
|
|
|
39700a |
+ rc = grub_install_copy_file (namenew, rename_target, 1);
|
|
|
39700a |
+ grub_util_unlink (namenew);
|
|
|
39700a |
+ }
|
|
|
39700a |
+
|
|
|
39700a |
+ if (rc < 0)
|
|
|
39700a |
+ grub_util_error (_("cannot rename the file %s to %s: %m"), namenew, name);
|
|
|
39700a |
+
|
|
|
39700a |
free (namenew);
|
|
|
39700a |
+ free (rename_target);
|
|
|
39700a |
}
|
|
|
39700a |
--
|
|
|
39700a |
1.9.3
|
|
|
39700a |
|