1 /* Return program header table entry.
2 Copyright (C) 1998-2010 Red Hat, Inc.
3 This file is part of elfutils.
4 Written by Ulrich Drepper <drepper@redhat.com>, 1998.
6 This file is free software; you can redistribute it and/or modify
7 it under the terms of either
9 * the GNU Lesser General Public License as published by the Free
10 Software Foundation; either version 3 of the License, or (at
11 your option) any later version
15 * the GNU General Public License as published by the Free
16 Software Foundation; either version 2 of the License, or (at
17 your option) any later version
19 or both in parallel, as here.
21 elfutils is distributed in the hope that it will be useful, but
22 WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
24 General Public License for more details.
26 You should have received copies of the GNU General Public License and
27 the GNU Lesser General Public License along with this program. If
28 not, see <http://www.gnu.org/licenses/>. */
42 gelf_getphdr (elf, ndx, dst)
47 GElf_Phdr *result = NULL;
52 if (unlikely (elf->kind != ELF_K_ELF))
54 __libelf_seterrno (ELF_E_INVALID_HANDLE);
60 __libelf_seterrno (ELF_E_INVALID_OPERAND);
64 rwlock_rdlock (elf->lock);
66 if (elf->class == ELFCLASS32)
68 /* Copy the elements one-by-one. */
69 Elf32_Phdr *phdr = elf->state.elf32.phdr;
73 rwlock_unlock (elf->lock);
74 phdr = INTUSE(elf32_getphdr) (elf);
76 /* The error number is already set. */
78 rwlock_rdlock (elf->lock);
81 /* Test whether the index is ok. */
83 if (ndx >= elf->state.elf32.ehdr->e_phnum
84 && (elf->state.elf32.ehdr->e_phnum != PN_XNUM
85 || __elf_getphdrnum_rdlock (elf, &phnum) != 0
86 || (size_t) ndx >= phnum))
88 __libelf_seterrno (ELF_E_INVALID_INDEX);
92 /* We know the result now. */
95 /* Now correct the pointer to point to the correct element. */
98 #define COPY(Name) result->Name = phdr->Name
110 /* Copy the elements one-by-one. */
111 Elf64_Phdr *phdr = elf->state.elf64.phdr;
115 rwlock_unlock (elf->lock);
116 phdr = INTUSE(elf64_getphdr) (elf);
118 /* The error number is already set. */
120 rwlock_rdlock (elf->lock);
123 /* Test whether the index is ok. */
125 if (ndx >= elf->state.elf64.ehdr->e_phnum
126 && (elf->state.elf64.ehdr->e_phnum != PN_XNUM
127 || __elf_getphdrnum_rdlock (elf, &phnum) != 0
128 || (size_t) ndx >= phnum))
130 __libelf_seterrno (ELF_E_INVALID_INDEX);
134 /* We only have to copy the data. */
135 result = memcpy (dst, phdr + ndx, sizeof (GElf_Phdr));
139 rwlock_unlock (elf->lock);