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-rw-r--r--fs/binfmt_aout.c1
-rw-r--r--fs/binfmt_elf.c27
-rw-r--r--fs/binfmt_elf_fdpic.c3
-rw-r--r--fs/binfmt_flat.c1
-rw-r--r--fs/binfmt_som.c1
-rw-r--r--fs/exec.c26
6 files changed, 24 insertions, 35 deletions
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 346b694..fdd3970 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -264,6 +264,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
#else
set_personality(PER_LINUX);
#endif
+ setup_new_exec(bprm);
current->mm->end_code = ex.a_text +
(current->mm->start_code = N_TXTADDR(ex));
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index edd90c4..fd5b2ea 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -662,27 +662,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
if (elf_interpreter[elf_ppnt->p_filesz - 1] != '\0')
goto out_free_interp;
- /*
- * The early SET_PERSONALITY here is so that the lookup
- * for the interpreter happens in the namespace of the
- * to-be-execed image. SET_PERSONALITY can select an
- * alternate root.
- *
- * However, SET_PERSONALITY is NOT allowed to switch
- * this task into the new images's memory mapping
- * policy - that is, TASK_SIZE must still evaluate to
- * that which is appropriate to the execing application.
- * This is because exit_mmap() needs to have TASK_SIZE
- * evaluate to the size of the old image.
- *
- * So if (say) a 64-bit application is execing a 32-bit
- * application it is the architecture's responsibility
- * to defer changing the value of TASK_SIZE until the
- * switch really is going to happen - do this in
- * flush_thread(). - akpm
- */
- SET_PERSONALITY(loc->elf_ex);
-
interpreter = open_exec(elf_interpreter);
retval = PTR_ERR(interpreter);
if (IS_ERR(interpreter))
@@ -730,9 +709,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
/* Verify the interpreter has a valid arch */
if (!elf_check_arch(&loc->interp_elf_ex))
goto out_free_dentry;
- } else {
- /* Executables without an interpreter also need a personality */
- SET_PERSONALITY(loc->elf_ex);
}
/* Flush all traces of the currently running executable */
@@ -752,7 +728,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
current->flags |= PF_RANDOMIZE;
- arch_pick_mmap_layout(current->mm);
+
+ setup_new_exec(bprm);
/* Do this so that we can load the interpreter, if need be. We will
change some of these later */
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index c57d9ce..18d7729 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -321,6 +321,9 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
set_personality(PER_LINUX_FDPIC);
if (elf_read_implies_exec(&exec_params.hdr, executable_stack))
current->personality |= READ_IMPLIES_EXEC;
+
+ setup_new_exec(bprm);
+
set_binfmt(&elf_fdpic_format);
current->mm->start_code = 0;
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index d4a00ea..42c6b4a 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -519,6 +519,7 @@ static int load_flat_file(struct linux_binprm * bprm,
/* OK, This is the point of no return */
set_personality(PER_LINUX_32BIT);
+ setup_new_exec(bprm);
}
/*
diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c
index 2a9b533..cc8560f 100644
--- a/fs/binfmt_som.c
+++ b/fs/binfmt_som.c
@@ -227,6 +227,7 @@ load_som_binary(struct linux_binprm * bprm, struct pt_regs * regs)
/* OK, This is the point of no return */
current->flags &= ~PF_FORKNOEXEC;
current->personality = PER_HPUX;
+ setup_new_exec(bprm);
/* Set the task size for HP-UX processes such that
* the gateway page is outside the address space.
diff --git a/fs/exec.c b/fs/exec.c
index 632b02e..675c3f4 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -941,9 +941,7 @@ void set_task_comm(struct task_struct *tsk, char *buf)
int flush_old_exec(struct linux_binprm * bprm)
{
- char * name;
- int i, ch, retval;
- char tcomm[sizeof(current->comm)];
+ int retval;
/*
* Make sure we have a private signal table and that
@@ -963,6 +961,20 @@ int flush_old_exec(struct linux_binprm * bprm)
goto out;
bprm->mm = NULL; /* We're using it now */
+ return 0;
+
+out:
+ return retval;
+}
+EXPORT_SYMBOL(flush_old_exec);
+
+void setup_new_exec(struct linux_binprm * bprm)
+{
+ int i, ch;
+ char * name;
+ char tcomm[sizeof(current->comm)];
+
+ arch_pick_mmap_layout(current->mm);
/* This is the point of no return */
current->sas_ss_sp = current->sas_ss_size = 0;
@@ -1019,14 +1031,8 @@ int flush_old_exec(struct linux_binprm * bprm)
flush_signal_handlers(current, 0);
flush_old_files(current->files);
-
- return 0;
-
-out:
- return retval;
}
-
-EXPORT_SYMBOL(flush_old_exec);
+EXPORT_SYMBOL(setup_new_exec);
/*
* Prepare credentials and lock ->cred_guard_mutex.
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