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coredump: remove redundant defines for dumpable states

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The existing SUID_DUMP_* defines duplicate the newer SUID_DUMPABLE_*
defines introduced in 54b501992d ("coredump: warn about unsafe
suid_dumpable / core_pattern combo").  Remove the new ones, and use the
prior values instead.

Signed-off-by: Kees Cook <[email protected]>
Reported-by: Chen Gang <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Doug Ledford <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: James Morris <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kees Cook 2013-02-27 17:03:15 -08:00 • committed by Linus Torvalds
commit e579d2c259
5 changed files with 9 additions and 13 deletions
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10
fs/exec.c
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@ -1111,7 +1111,7 @@ void setup_new_exec(struct linux_binprm * bprm)
current->sas_ss_sp = current->sas_ss_size = 0;
if (uid_eq(current_euid(), current_uid()) && gid_eq(current_egid(), current_gid()))
set_dumpable(current->mm, SUID_DUMPABLE_ENABLED);
set_dumpable(current->mm, SUID_DUMP_USER);
else
set_dumpable(current->mm, suid_dumpable);
@ -1639,17 +1639,17 @@ EXPORT_SYMBOL(set_binfmt);
void set_dumpable(struct mm_struct *mm, int value)
{
switch (value) {
case SUID_DUMPABLE_DISABLED:
case SUID_DUMP_DISABLE:
clear_bit(MMF_DUMPABLE, &mm->flags);
smp_wmb();
clear_bit(MMF_DUMP_SECURELY, &mm->flags);
break;
case SUID_DUMPABLE_ENABLED:
case SUID_DUMP_USER:
set_bit(MMF_DUMPABLE, &mm->flags);
smp_wmb();
clear_bit(MMF_DUMP_SECURELY, &mm->flags);
break;
case SUID_DUMPABLE_SAFE:
case SUID_DUMP_ROOT:
set_bit(MMF_DUMP_SECURELY, &mm->flags);
smp_wmb();
set_bit(MMF_DUMPABLE, &mm->flags);
@ -1662,7 +1662,7 @@ int __get_dumpable(unsigned long mm_flags)
int ret;
ret = mm_flags & MMF_DUMPABLE_MASK;
return (ret > SUID_DUMPABLE_ENABLED) ? SUID_DUMPABLE_SAFE : ret;
return (ret > SUID_DUMP_USER) ? SUID_DUMP_ROOT : ret;
}
int get_dumpable(struct mm_struct *mm)