2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 Copyright (c) 2008 Eliot Dresselhaus
18 Permission is hereby granted, free of charge, to any person obtaining
19 a copy of this software and associated documentation files (the
20 "Software"), to deal in the Software without restriction, including
21 without limitation the rights to use, copy, modify, merge, publish,
22 distribute, sublicense, and/or sell copies of the Software, and to
23 permit persons to whom the Software is furnished to do so, subject to
24 the following conditions:
26 The above copyright notice and this permission notice shall be
27 included in all copies or substantial portions of the Software.
29 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
33 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
34 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
35 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38 #include <vppinfra/elf.h>
40 #include <sys/types.h>
49 elf_set_interpreter (elf_main_t * em, char *interp)
55 vec_foreach (g, em->segments)
57 if (g->header.type == ELF_SEGMENT_INTERP)
61 if (g >= vec_end (em->segments))
62 return clib_error_return (0, "interpreter not found");
64 if (g->header.memory_size < 1 + strlen (interp))
65 return clib_error_return (0,
66 "given interpreter does not fit; must be less than %d bytes (`%s' given)",
67 g->header.memory_size, interp);
70 elf_get_section_by_start_address (em, g->header.virtual_address, &s);
74 /* Put in new null terminated string. */
75 clib_memset (s->contents, 0, vec_len (s->contents));
76 clib_memcpy (s->contents, interp, strlen (interp));
82 delete_dynamic_rpath_entries_from_section (elf_main_t * em, elf_section_t * s)
84 elf64_dynamic_entry_t *e;
85 elf64_dynamic_entry_t *new_es = 0;
87 vec_foreach (e, em->dynamic_entries)
91 case ELF_DYNAMIC_ENTRY_RPATH:
92 case ELF_DYNAMIC_ENTRY_RUN_PATH:
96 vec_add1 (new_es, e[0]);
101 /* Pad so as to keep section size constant. */
103 elf64_dynamic_entry_t e_end;
104 e_end.type = ELF_DYNAMIC_ENTRY_END;
106 while (vec_len (new_es) < vec_len (em->dynamic_entries))
107 vec_add1 (new_es, e_end);
110 elf_set_dynamic_entries (em);
114 elf_delete_dynamic_rpath_entries (elf_main_t * em)
118 vec_foreach (s, em->sections)
120 switch (s->header.type)
122 case ELF_SECTION_DYNAMIC:
123 delete_dynamic_rpath_entries_from_section (em, s);
137 char *set_interpreter;
142 main (int argc, char *argv[])
144 elf_test_main_t _tm, *tm = &_tm;
145 elf_main_t *em = &tm->elf_main;
147 clib_error_t *error = 0;
149 clib_memset (tm, 0, sizeof (tm[0]));
151 unformat_init_command_line (&i, argv);
152 while (unformat_check_input (&i) != UNFORMAT_END_OF_INPUT)
154 if (unformat (&i, "in %s", &tm->input_file))
156 else if (unformat (&i, "out %s", &tm->output_file))
158 else if (unformat (&i, "set-interpreter %s", &tm->set_interpreter))
160 else if (unformat (&i, "verbose"))
162 else if (unformat (&i, "verbose-symbols"))
163 tm->verbose |= FORMAT_ELF_MAIN_SYMBOLS;
164 else if (unformat (&i, "verbose-relocations"))
165 tm->verbose |= FORMAT_ELF_MAIN_RELOCATIONS;
166 else if (unformat (&i, "verbose-dynamic"))
167 tm->verbose |= FORMAT_ELF_MAIN_DYNAMIC;
170 error = unformat_parse_error (&i);
177 clib_warning ("No input file! Using test_bihash_template");
178 tm->input_file = "test_bihash_template";
181 error = elf_read_file (em, tm->input_file);
185 if (tm->set_interpreter)
187 clib_error_t *error = elf_set_interpreter (em, tm->set_interpreter);
190 elf_delete_dynamic_rpath_entries (em);
194 fformat (stdout, "%U", format_elf_main, em, tm->verbose);
197 error = elf_write_file (em, tm->output_file);
204 clib_error_report (error);
212 * fd.io coding-style-patch-verification: ON
215 * eval: (c-set-style "gnu")