2 * Copyright (c) 2006 Joseph Koshy
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 _libelf_allocate_elf(void)
45 if ((e
= malloc(sizeof(*e
))) == NULL
) {
46 LIBELF_SET_ERROR(RESOURCE
, errno
);
52 e
->e_byteorder
= ELFDATANONE
;
53 e
->e_class
= ELFCLASSNONE
;
54 e
->e_cmd
= ELF_C_NULL
;
57 e
->e_kind
= ELF_K_NONE
;
61 e
->e_version
= LIBELF_PRIVATE(version
);
63 (void) memset(&e
->e_u
, 0, sizeof(e
->e_u
));
69 _libelf_init_elf(Elf
*e
, Elf_Kind kind
)
72 assert(e
->e_kind
== ELF_K_NONE
);
78 STAILQ_INIT(&e
->e_u
.e_elf
.e_scn
);
85 #define FREE(P) do { \
92 _libelf_release_elf(Elf
*e
)
96 FREE(e
->e_u
.e_ar
.e_symtab
);
100 switch (e
->e_class
) {
102 FREE(e
->e_u
.e_elf
.e_ehdr
.e_ehdr32
);
103 FREE(e
->e_u
.e_elf
.e_phdr
.e_phdr32
);
106 FREE(e
->e_u
.e_elf
.e_ehdr
.e_ehdr64
);
107 FREE(e
->e_u
.e_elf
.e_phdr
.e_phdr64
);
111 assert(STAILQ_EMPTY(&e
->e_u
.e_elf
.e_scn
));
114 FREE(e
->e_arhdr
->ar_name
);
115 FREE(e
->e_arhdr
->ar_rawname
);
131 _libelf_allocate_data(Elf_Scn
*s
)
135 if ((d
= calloc((size_t) 1, sizeof(Elf_Data
))) == NULL
) {
136 LIBELF_SET_ERROR(RESOURCE
, 0);
146 _libelf_release_data(Elf_Data
*d
)
149 if (d
->d_flags
& LIBELF_F_MALLOCED
)
158 _libelf_allocate_scn(Elf
*e
, size_t ndx
)
162 if ((s
= calloc((size_t) 1, sizeof(Elf_Scn
))) == NULL
) {
163 LIBELF_SET_ERROR(RESOURCE
, errno
);
170 STAILQ_INIT(&s
->s_data
);
171 STAILQ_INIT(&s
->s_rawdata
);
173 STAILQ_INSERT_TAIL(&e
->e_u
.e_elf
.e_scn
, s
, s_next
);
179 _libelf_release_scn(Elf_Scn
*s
)
186 STAILQ_FOREACH_SAFE(d
, &s
->s_data
, d_next
, td
) {
187 STAILQ_REMOVE(&s
->s_data
, d
, _Elf_Data
, d_next
);
188 d
= _libelf_release_data(d
);
191 STAILQ_FOREACH_SAFE(d
, &s
->s_rawdata
, d_next
, td
) {
192 assert((d
->d_flags
& LIBELF_F_MALLOCED
) == 0);
193 STAILQ_REMOVE(&s
->s_rawdata
, d
, _Elf_Data
, d_next
);
194 d
= _libelf_release_data(d
);
201 STAILQ_REMOVE(&e
->e_u
.e_elf
.e_scn
, s
, _Elf_Scn
, s_next
);