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From 82366b73d1430f2ff2086401e09c88be1f170bd5 Mon Sep 17 00:00:00 2001
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From: Colin Watson <cjwatson@ubuntu.com>
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Date: Fri, 17 Jan 2014 02:28:46 +0000
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Subject: [PATCH 035/261] Ignore EPERM when modifying kern.geom.debugflags
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Many tests fail when run as a non-root user on FreeBSD. The failures
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all amount to an inability to open files using grub_util_fd_open,
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because we cannot set the kern.geom.debugflags sysctl. This sysctl is
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indeed important to allow us to do such things as installing GRUB to the
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MBR, but if we need to do that and can't then we will get an error
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later. Enforcing it here is unnecessary and prevents otherwise
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perfectly reasonable operations.
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---
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ChangeLog | 7 +++++++
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grub-core/osdep/freebsd/hostdisk.c | 12 ++++++++++--
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2 files changed, 17 insertions(+), 2 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index 4688ff4e6..10abfe28f 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,10 @@
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+2014-01-19 Colin Watson <cjwatson@ubuntu.com>
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+
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+ * grub-core/osdep/freebsd/hostdisk.c (grub_util_fd_open): Ignore
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+ EPERM when modifying kern.geom.debugflags. It is only a problem for
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+ such things as installing GRUB to the MBR, in which case there'll be
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+ an error later anyway, not for opening files during tests.
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+
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2014-01-18 Andrey Borzenkov <arvidjaar@gmail.com>
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* grub-core/Makefile.am: Build grub_emu_init.[ch] from MODULE_FILES
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diff --git a/grub-core/osdep/freebsd/hostdisk.c b/grub-core/osdep/freebsd/hostdisk.c
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index eb202dcc8..6145d0735 100644
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--- a/grub-core/osdep/freebsd/hostdisk.c
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+++ b/grub-core/osdep/freebsd/hostdisk.c
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@@ -102,8 +102,16 @@ grub_util_fd_open (const char *os_dev, int flags)
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if (! (sysctl_oldflags & 0x10)
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&& sysctlbyname ("kern.geom.debugflags", NULL , 0, &sysctl_flags, sysctl_size))
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{
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- grub_error (GRUB_ERR_BAD_DEVICE, "cannot set flags of sysctl kern.geom.debugflags");
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- return GRUB_UTIL_FD_INVALID;
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+ if (errno == EPERM)
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+ /* Running as an unprivileged user; don't worry about restoring
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+ flags, although if we try to write to anything interesting such
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+ as the MBR then we may fail later. */
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+ sysctl_oldflags = 0x10;
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+ else
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+ {
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+ grub_error (GRUB_ERR_BAD_DEVICE, "cannot set flags of sysctl kern.geom.debugflags");
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+ return GRUB_UTIL_FD_INVALID;
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+ }
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}
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ret = open (os_dev, flags, S_IROTH | S_IRGRP | S_IRUSR | S_IWUSR);
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--
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2.13.5
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