2 * Copyright (c) 2006,2008,2010 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
39 ELFTC_VCSID("$Id: libelf_allocate.c 3738 2019-05-05 21:49:06Z jkoshy $");
42 _libelf_allocate_elf(void)
46 if ((e = calloc((size_t) 1, sizeof(*e))) == NULL) {
47 LIBELF_SET_ERROR(RESOURCE, errno);
52 e->e_byteorder = ELFDATANONE;
53 e->e_class = ELFCLASSNONE;
54 e->e_cmd = ELF_C_NULL;
56 e->e_kind = ELF_K_NONE;
57 e->e_version = LIBELF_PRIVATE(version);
63 _libelf_init_elf(Elf *e, Elf_Kind kind)
66 assert(e->e_kind == ELF_K_NONE);
72 RB_INIT(&e->e_u.e_elf.e_scn);
80 _libelf_release_elf(Elf *e)
86 free(e->e_u.e_ar.e_symtab);
92 free(e->e_u.e_elf.e_ehdr.e_ehdr32);
93 free(e->e_u.e_elf.e_phdr.e_phdr32);
96 free(e->e_u.e_elf.e_ehdr.e_ehdr64);
97 free(e->e_u.e_elf.e_phdr.e_phdr64);
101 assert(RB_EMPTY(&e->e_u.e_elf.e_scn));
103 if (e->e_flags & LIBELF_F_AR_HEADER) {
104 arh = e->e_hdr.e_arhdr;
106 free(arh->ar_rawname);
119 struct _Libelf_Data *
120 _libelf_allocate_data(Elf_Scn *s)
122 struct _Libelf_Data *d;
124 if ((d = calloc((size_t) 1, sizeof(*d))) == NULL) {
125 LIBELF_SET_ERROR(RESOURCE, 0);
134 struct _Libelf_Data *
135 _libelf_release_data(struct _Libelf_Data *d)
138 if (d->d_flags & LIBELF_F_DATA_MALLOCED)
139 free(d->d_data.d_buf);
147 _libelf_allocate_scn(Elf *e, size_t ndx)
151 if ((s = calloc((size_t) 1, sizeof(Elf_Scn))) == NULL) {
152 LIBELF_SET_ERROR(RESOURCE, errno);
159 STAILQ_INIT(&s->s_data);
160 STAILQ_INIT(&s->s_rawdata);
162 RB_INSERT(scntree, &e->e_u.e_elf.e_scn, s);
168 _libelf_release_scn(Elf_Scn *s)
171 struct _Libelf_Data *d, *td;
175 STAILQ_FOREACH_SAFE(d, &s->s_data, d_next, td) {
176 STAILQ_REMOVE(&s->s_data, d, _Libelf_Data, d_next);
177 d = _libelf_release_data(d);
180 STAILQ_FOREACH_SAFE(d, &s->s_rawdata, d_next, td) {
181 assert((d->d_flags & LIBELF_F_DATA_MALLOCED) == 0);
182 STAILQ_REMOVE(&s->s_rawdata, d, _Libelf_Data, d_next);
183 d = _libelf_release_data(d);
190 RB_REMOVE(scntree, &e->e_u.e_elf.e_scn, s);