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In openSUSE 10.3, AppArmor modifies remove_suid to take a struct path rather than just a dentry. This patch tests that the kernel is openSUSE 10.3 or newer and adjusts the call accordingly. Debian/Ubuntu with AppArmor applied will also need a similar patch. Maintainers of btrfs under those distributions should build on this patch or, alternatively, alter their package descriptions to add -DREMOVE_SUID_PATH to the compiler command line. Signed-off-by: Jeff Mahoney <jeffm@suse.com> - --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ b/compat.h 2008-02-06 16:46:13.000000000 -0500 @@ -0,0 +1,15 @@ +#ifndef _COMPAT_H_ +#define _COMPAT_H_ + + +/* + * Even if AppArmor isn't enabled, it still has different prototypes. + * Add more distro/version pairs here to declare which has AppArmor applied. + */ +#if defined(CONFIG_SUSE_KERNEL) +# if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22) +# define REMOVE_SUID_PATH 1 +# endif +#endif + +#endif /* _COMPAT_H_ */ - --- a/file.c 2008-02-06 11:37:39.000000000 -0500 +++ b/file.c 2008-02-06 16:46:23.000000000 -0500 @@ -37,6 +37,7 @@ #include "ordered-data.h" #include "ioctl.h" #include "print-tree.h" +#include "compat.h" static int btrfs_copy_from_user(loff_t pos, int num_pages, int write_bytes, @@ -790,7 +791,11 @@ static ssize_t btrfs_file_write(struct f goto out_nolock; if (count == 0) goto out_nolock; +#ifdef REMOVE_SUID_PATH + err = remove_suid(&file->f_path); +#else err = remove_suid(fdentry(file)); +#endif if (err) goto out_nolock; file_update_time(file); Signed-off-by: Chris Mason <chris.mason@oracle.com>
26 lines
648 B
C
26 lines
648 B
C
#ifndef _COMPAT_H_
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#define _COMPAT_H_
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/*
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* Even if AppArmor isn't enabled, it still has different prototypes.
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* Add more distro/version pairs here to declare which has AppArmor applied.
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*/
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#if defined(CONFIG_SUSE_KERNEL)
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# if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
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# define REMOVE_SUID_PATH 1
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# endif
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#endif
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/*
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* catch any other distros that have patched in apparmor. This isn't
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* 100% reliable because it won't catch people that hand compile their
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* own distro kernels without apparmor compiled in. But, it is better
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* than nothing.
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*/
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#ifdef CONFIG_SECURITY_APPARMOR
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# define REMOVE_SUID_PATH 1
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#endif
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#endif /* _COMPAT_H_ */
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