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Diffstat (limited to 'libelf/elf_getphdrnum.c')
-rw-r--r--libelf/elf_getphdrnum.c54
1 files changed, 28 insertions, 26 deletions
diff --git a/libelf/elf_getphdrnum.c b/libelf/elf_getphdrnum.c
index 63c27fb1..061183bb 100644
--- a/libelf/elf_getphdrnum.c
+++ b/libelf/elf_getphdrnum.c
@@ -1,5 +1,5 @@
/* Return number of program headers in the ELF file.
- Copyright (C) 2010, 2014 Red Hat, Inc.
+ Copyright (C) 2010, 2014, 2015 Red Hat, Inc.
This file is part of elfutils.
This file is free software; you can redistribute it and/or modify
@@ -38,9 +38,8 @@
int
-__elf_getphdrnum_rdlock (elf, dst)
- Elf *elf;
- size_t *dst;
+internal_function
+__elf_getphdrnum_rdlock (Elf *elf, size_t *dst)
{
if (unlikely (elf->state.elf64.ehdr == NULL))
{
@@ -80,23 +79,10 @@ __elf_getphdrnum_rdlock (elf, dst)
}
int
-elf_getphdrnum (elf, dst)
- Elf *elf;
- size_t *dst;
+internal_function
+__elf_getphdrnum_chk_rdlock (Elf *elf, size_t *dst)
{
- int result;
-
- if (elf == NULL)
- return -1;
-
- if (unlikely (elf->kind != ELF_K_ELF))
- {
- __libelf_seterrno (ELF_E_INVALID_HANDLE);
- return -1;
- }
-
- rwlock_rdlock (elf->lock);
- result = __elf_getphdrnum_rdlock (elf, dst);
+ int result = __elf_getphdrnum_rdlock (elf, dst);
/* Do some sanity checking to make sure phnum and phoff are consistent. */
Elf64_Off off = (elf->class == ELFCLASS32
@@ -105,14 +91,13 @@ elf_getphdrnum (elf, dst)
if (unlikely (off == 0))
{
*dst = 0;
- goto out;
+ return result;
}
if (unlikely (off >= elf->maximum_size))
{
__libelf_seterrno (ELF_E_INVALID_DATA);
- result = -1;
- goto out;
+ return -1;
}
/* Check for too many sections. */
@@ -121,15 +106,32 @@ elf_getphdrnum (elf, dst)
if (unlikely (*dst > SIZE_MAX / phdr_size))
{
__libelf_seterrno (ELF_E_INVALID_DATA);
- result = -1;
- goto out;
+ return -1;
}
/* Truncated file? Don't return more than can be indexed. */
if (unlikely (elf->maximum_size - off < *dst * phdr_size))
*dst = (elf->maximum_size - off) / phdr_size;
-out:
+ return result;
+}
+
+int
+elf_getphdrnum (Elf *elf, size_t *dst)
+{
+ int result;
+
+ if (elf == NULL)
+ return -1;
+
+ if (unlikely (elf->kind != ELF_K_ELF))
+ {
+ __libelf_seterrno (ELF_E_INVALID_HANDLE);
+ return -1;
+ }
+
+ rwlock_rdlock (elf->lock);
+ result = __elf_getphdrnum_chk_rdlock (elf, dst);
rwlock_unlock (elf->lock);
return result;