diff options
| -rw-r--r-- | libelf/ChangeLog | 6 | ||||
| -rw-r--r-- | libelf/elf32_updatefile.c | 10 | ||||
| -rw-r--r-- | libelf/elf_update.c | 30 | ||||
| -rw-r--r-- | tests/ChangeLog | 11 | ||||
| -rw-r--r-- | tests/Makefile.am | 11 | ||||
| -rw-r--r-- | tests/addsections.c | 286 | ||||
| -rw-r--r-- | tests/elfcopy.c | 286 | ||||
| -rwxr-xr-x | tests/run-copyadd-sections.sh | 87 |
8 files changed, 713 insertions, 14 deletions
diff --git a/libelf/ChangeLog b/libelf/ChangeLog index 7c884b00..35421222 100644 --- a/libelf/ChangeLog +++ b/libelf/ChangeLog @@ -1,3 +1,9 @@ +2018-09-12 Mark Wielaard <[email protected]> + + * elf32_updatefile.c (updatemmap): Use memmove, not memcpy. + * elf_update.c (write_file): Try to mremap if file needs to be + extended. + 2018-08-18 Mark Wielaard <[email protected]> * libelf.h (elf_compress_gnu): Add documentation about diff --git a/libelf/elf32_updatefile.c b/libelf/elf32_updatefile.c index 7ac99510..545ce083 100644 --- a/libelf/elf32_updatefile.c +++ b/libelf/elf32_updatefile.c @@ -203,7 +203,7 @@ __elfw2(LIBELFBITS,updatemmap) (Elf *elf, int change_bo, size_t shnum) sizeof (ElfW2(LIBELFBITS,Phdr)) * phnum, 1); } else - memcpy (elf->map_address + elf->start_offset + ehdr->e_phoff, + memmove (elf->map_address + elf->start_offset + ehdr->e_phoff, elf->state.ELFW(elf,LIBELFBITS).phdr, sizeof (ElfW2(LIBELFBITS,Phdr)) * phnum); @@ -371,9 +371,11 @@ __elfw2(LIBELFBITS,updatemmap) (Elf *elf, int change_bo, size_t shnum) last_position += dl->data.d.d_size; } else if (dl->data.d.d_size != 0) - last_position = mempcpy (last_position, - dl->data.d.d_buf, - dl->data.d.d_size); + { + memmove (last_position, dl->data.d.d_buf, + dl->data.d.d_size); + last_position += dl->data.d.d_size; + } scn_changed = true; } diff --git a/libelf/elf_update.c b/libelf/elf_update.c index 8ce07829..36997c2b 100644 --- a/libelf/elf_update.c +++ b/libelf/elf_update.c @@ -93,13 +93,29 @@ write_file (Elf *elf, off_t size, int change_bo, size_t shnum) ENOSPC. Otherwise we ignore the error and treat it as just hint. */ if (elf->parent == NULL && (elf->maximum_size == ~((size_t) 0) - || (size_t) size > elf->maximum_size) - && unlikely (posix_fallocate (elf->fildes, 0, size) != 0)) - if (errno == ENOSPC) - { - __libelf_seterrno (ELF_E_WRITE_ERROR); - return -1; - } + || (size_t) size > elf->maximum_size)) + { + if (unlikely (posix_fallocate (elf->fildes, 0, size) != 0)) + if (errno == ENOSPC) + { + __libelf_seterrno (ELF_E_WRITE_ERROR); + return -1; + } + + /* Extend the mmap address if needed. */ + if (elf->cmd == ELF_C_RDWR_MMAP + && (size_t) size > elf->maximum_size) + { + if (mremap (elf->map_address, elf->maximum_size, + size, 0) == MAP_FAILED) + { + __libelf_seterrno (ELF_E_WRITE_ERROR); + return -1; + } + elf->maximum_size = size; + } + + } /* The file is mmaped. */ if ((class == ELFCLASS32 diff --git a/tests/ChangeLog b/tests/ChangeLog index 8d70891a..57098578 100644 --- a/tests/ChangeLog +++ b/tests/ChangeLog @@ -1,3 +1,14 @@ +2018-09-12 Mark Wielaard <[email protected]> + + * Makefile.am (check_PROGRAMS): Add elfcopy and addsections. + (TESTS): Add run-copyadd-sections.sh. + (EXTRA_DIST): Likewise. + (elfcopy_LDADD): New variable. + (addsections_LDADD): Likewise. + * addsections.c: New file. + * elfcopy.c: Likewise. + * run-copyadd-sections.sh: New test. + 2018-09-11 Mark Wielaard <[email protected]> * backtrace-dwarf.c (main): Add section attribute. diff --git a/tests/Makefile.am b/tests/Makefile.am index 29460834..e0edef0c 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -59,7 +59,8 @@ check_PROGRAMS = arextract arsymtest newfile saridx scnnames sectiondump \ elfgetzdata elfputzdata zstrptr emptyfile vendorelf \ fillfile dwarf_default_lower_bound dwarf-die-addr-die \ get-units-invalid get-units-split attr-integrate-skel \ - all-dwarf-ranges unit-info next_cfi + all-dwarf-ranges unit-info next_cfi \ + elfcopy addsections asm_TESTS = asm-tst1 asm-tst2 asm-tst3 asm-tst4 asm-tst5 \ asm-tst6 asm-tst7 asm-tst8 asm-tst9 @@ -153,7 +154,8 @@ TESTS = run-arextract.sh run-arsymtest.sh run-ar.sh newfile test-nlist \ run-attr-integrate-skel.sh \ run-all-dwarf-ranges.sh run-unit-info.sh \ run-reloc-bpf.sh \ - run-next-cfi.sh run-next-cfi-self.sh + run-next-cfi.sh run-next-cfi-self.sh \ + run-copyadd-sections.sh if !BIARCH export ELFUTILS_DISABLE_BIARCH = 1 @@ -403,7 +405,8 @@ EXTRA_DIST = run-arextract.sh run-arsymtest.sh run-ar.sh \ testfile-ranges-hello.dwo.bz2 testfile-ranges-world.dwo.bz2 \ run-unit-info.sh run-next-cfi.sh run-next-cfi-self.sh \ testfile-riscv64.bz2 testfile-riscv64-s.bz2 \ - testfile-riscv64-core.bz2 + testfile-riscv64-core.bz2 \ + run-copyadd-sections.sh if USE_VALGRIND valgrind_cmd='valgrind -q --leak-check=full --error-exitcode=1' @@ -571,6 +574,8 @@ attr_integrate_skel_LDADD = $(libdw) all_dwarf_ranges_LDADD = $(libdw) unit_info_LDADD = $(libdw) next_cfi_LDADD = $(libelf) $(libdw) +elfcopy_LDADD = $(libelf) +addsections_LDADD = $(libelf) # We want to test the libelf header against the system elf.h header. # Don't include any -I CPPFLAGS. diff --git a/tests/addsections.c b/tests/addsections.c new file mode 100644 index 00000000..391c5b47 --- /dev/null +++ b/tests/addsections.c @@ -0,0 +1,286 @@ +/* Test program for adding (more than SHN_LORESERVE) sections. + Copyright (C) 2018 Red Hat, Inc. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <errno.h> +#include <fcntl.h> +#include <inttypes.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include ELFUTILS_HEADER(elf) +#include <gelf.h> + + +/* shstrndx is special, might overflow into section zero header sh_link. */ +static int +setshstrndx (Elf *elf, size_t ndx) +{ + printf ("setshstrndx: %zd\n", ndx); + + GElf_Ehdr ehdr_mem; + GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem); + if (ehdr == NULL) + return -1; + + if (ndx < SHN_LORESERVE) + ehdr->e_shstrndx = ndx; + else + { + ehdr->e_shstrndx = SHN_XINDEX; + Elf_Scn *zscn = elf_getscn (elf, 0); + GElf_Shdr zshdr_mem; + GElf_Shdr *zshdr = gelf_getshdr (zscn, &zshdr_mem); + if (zshdr == NULL) + return -1; + zshdr->sh_link = ndx; + if (gelf_update_shdr (zscn, zshdr) == 0) + return -1; + } + + if (gelf_update_ehdr (elf, ehdr) == 0) + return -1; + + return 0; +} + +/* Will add nr new '.extra' sections and a new '.new_shstrtab' section + at the end. */ +static void +add_sections (const char *name, size_t nr, int use_mmap) +{ + printf ("add_sections '%s': %zd\n", name, nr); + + int fd = open (name, O_RDWR); + if (fd < 0) + { + fprintf (stderr, "Couldn't open file '%s': %s\n", + name, strerror (errno)); + exit (1); + } + + Elf *elf = elf_begin (fd, use_mmap ? ELF_C_RDWR_MMAP : ELF_C_RDWR, NULL); + if (elf == NULL) + { + fprintf (stderr, "Couldn't open ELF file '%s': %s\n", + name, elf_errmsg (-1)); + exit (1); + } + + /* We will add a new shstrtab section with two new names at the end. + Just get the current shstrtab table and add two entries '.extra' + and '.new_shstrtab' at the end of the table, so all existing indexes + are still valid. */ + size_t shstrndx; + if (elf_getshdrstrndx (elf, &shstrndx) < 0) + { + printf ("cannot get shstrndx: %s\n", elf_errmsg (-1)); + exit (1); + } + + Elf_Scn *shstrtab_scn = elf_getscn (elf, shstrndx); + if (shstrtab_scn == NULL) + { + printf ("couldn't get shstrtab scn: %s\n", elf_errmsg (-1)); + exit (1); + } + Elf_Data *shstrtab_data = elf_getdata (shstrtab_scn, NULL); + if (shstrtab_data == NULL) + { + printf ("couldn't get shstrtab data: %s\n", elf_errmsg (-1)); + exit (1); + } + size_t new_shstrtab_size = (shstrtab_data->d_size + + strlen (".extra") + 1 + + strlen (".new_shstrtab") + 1); + void *new_shstrtab_buf = malloc (new_shstrtab_size); + if (new_shstrtab_buf == NULL) + { + printf ("couldn't allocate new shstrtab data d_buf\n"); + exit (1); + } + memcpy (new_shstrtab_buf, shstrtab_data->d_buf, shstrtab_data->d_size); + size_t extra_idx = shstrtab_data->d_size; + size_t new_shstrtab_idx = extra_idx + strlen (".extra") + 1; + strcpy (new_shstrtab_buf + extra_idx, ".extra"); + strcpy (new_shstrtab_buf + new_shstrtab_idx, ".new_shstrtab"); + + // Add lots of .extra sections... + size_t cnt = 0; + while (cnt++ < nr) + { + Elf_Scn *scn = elf_newscn (elf); + if (scn == NULL) + { + printf ("cannot create .extra section (%zd): %s\n", cnt, + elf_errmsg (-1)); + exit (1); + } + + Elf_Data *data = elf_newdata (scn); + if (data == NULL) + { + printf ("couldn't create new section data (%zd): %s\n", cnt, + elf_errmsg (-1)); + exit (1); + } + + data->d_size = strlen ("extra") + 1; + data->d_buf = "extra"; + data->d_type = ELF_T_BYTE; + data->d_align = 1; + + GElf_Shdr shdr_mem; + GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); + if (shdr == NULL) + { + printf ("cannot get header for new section (%zd): %s\n", cnt, + elf_errmsg (-1)); + exit (1); + } + + shdr->sh_type = SHT_PROGBITS; + shdr->sh_flags = 0; + shdr->sh_addr = 0; + shdr->sh_link = SHN_UNDEF; + shdr->sh_info = SHN_UNDEF; + shdr->sh_addralign = 1; + shdr->sh_entsize = 0; + shdr->sh_size = data->d_size; + shdr->sh_name = extra_idx; + + if (gelf_update_shdr (scn, shdr) == 0) + { + printf ("cannot update new section header (%zd): %s\n", cnt, + elf_errmsg (-1)); + exit (1); + } + } + + // Create new shstrtab section. + Elf_Scn *new_shstrtab_scn = elf_newscn (elf); + if (new_shstrtab_scn == NULL) + { + printf ("cannot create new shstrtab section: %s\n", elf_errmsg (-1)); + exit (1); + } + + Elf_Data *new_shstrtab_data = elf_newdata (new_shstrtab_scn); + if (new_shstrtab_data == NULL) + { + printf ("couldn't create new shstrtab section data: %s\n", + elf_errmsg (-1)); + exit (1); + } + + new_shstrtab_data->d_size = new_shstrtab_size; + new_shstrtab_data->d_buf = new_shstrtab_buf; + new_shstrtab_data->d_type = ELF_T_BYTE; + new_shstrtab_data->d_align = 1; + + GElf_Shdr shdr_mem; + GElf_Shdr *shdr = gelf_getshdr (new_shstrtab_scn, &shdr_mem); + if (shdr == NULL) + { + printf ("cannot get header for new shstrtab section: %s\n", + elf_errmsg (-1)); + exit (1); + } + + shdr->sh_type = SHT_STRTAB; + shdr->sh_flags = 0; + shdr->sh_addr = 0; + shdr->sh_link = SHN_UNDEF; + shdr->sh_info = SHN_UNDEF; + shdr->sh_addralign = 1; + shdr->sh_entsize = 0; + shdr->sh_size = new_shstrtab_size; + shdr->sh_name = new_shstrtab_idx; + + // Finished new shstrtab section, update the header. + if (gelf_update_shdr (new_shstrtab_scn, shdr) == 0) + { + printf ("cannot update new shstrtab section header: %s\n", + elf_errmsg (-1)); + exit (1); + } + + // Set it as the new shstrtab section to get the names correct. + size_t new_shstrndx = elf_ndxscn (new_shstrtab_scn); + if (setshstrndx (elf, new_shstrndx) < 0) + { + printf ("cannot set shstrndx: %s\n", elf_errmsg (-1)); + exit (1); + } + + // Write everything to disk. + if (elf_update (elf, ELF_C_WRITE) < 0) + { + printf ("failure in elf_update: %s\n", elf_errmsg (-1)); + exit (1); + } + + if (elf_end (elf) != 0) + { + printf ("couldn't cleanup elf '%s': %s\n", name, elf_errmsg (-1)); + exit (1); + } + + if (close (fd) != 0) + { + printf ("couldn't close '%s': %s\n", name, strerror (errno)); + exit (1); + } + + free (new_shstrtab_buf); +} + +int +main (int argc, char *argv[]) +{ + elf_version (EV_CURRENT); + + /* Takes the given file, and adds the given number of sections. */ + if (argc < 3 || argc > 4) + { + fprintf (stderr, "addsections [--mmap] nr elf.file\n"); + exit (1); + } + + int argn = 1; + bool use_mmap = false; + if (strcmp (argv[argn], "--mmap") == 0) + { + use_mmap = true; + argn++; + } + + size_t nr = atoi (argv[argn++]); + const char *file = argv[argn]; + add_sections (file, nr, use_mmap); + + return 0; +} diff --git a/tests/elfcopy.c b/tests/elfcopy.c new file mode 100644 index 00000000..9000cc96 --- /dev/null +++ b/tests/elfcopy.c @@ -0,0 +1,286 @@ +/* Test program for copying a whole ELF file using libelf. + Copyright (C) 2018 Red Hat, Inc. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <errno.h> +#include <fcntl.h> +#include <inttypes.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include ELFUTILS_HEADER(elf) +#include <gelf.h> + + +/* shstrndx is special, might overflow into section zero header sh_link. */ +static int +setshstrndx (Elf *elf, size_t ndx) +{ + printf ("setshstrndx: %zd\n", ndx); + + GElf_Ehdr ehdr_mem; + GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem); + if (ehdr == NULL) + return -1; + + if (ndx < SHN_LORESERVE) + ehdr->e_shstrndx = ndx; + else + { + ehdr->e_shstrndx = SHN_XINDEX; + Elf_Scn *zscn = elf_getscn (elf, 0); + GElf_Shdr zshdr_mem; + GElf_Shdr *zshdr = gelf_getshdr (zscn, &zshdr_mem); + if (zshdr == NULL) + return -1; + zshdr->sh_link = ndx; + if (gelf_update_shdr (zscn, zshdr) == 0) + return -1; + } + + if (gelf_update_ehdr (elf, ehdr) == 0) + return -1; + + return 0; +} + +/* Copies all elements of an ELF file either using mmap or read. */ +static void +copy_elf (const char *in, const char *out, bool use_mmap) +{ + printf ("\ncopy_elf: %s -> %s (%s)\n", in, out, use_mmap ? "mmap" : "read"); + + /* Existing ELF file. */ + int fda = open (in, O_RDONLY); + if (fda < 0) + { + fprintf (stderr, "Couldn't open file '%s': %s\n", + in, strerror (errno)); + exit (1); + } + + Elf *elfa = elf_begin (fda, use_mmap ? ELF_C_READ_MMAP : ELF_C_READ, NULL); + if (elfa == NULL) + { + fprintf (stderr, "Couldn't open ELF file '%s': %s\n", + in, elf_errmsg (-1)); + exit (1); + } + + /* Open new file. */ + int fdb = open (out, O_RDWR | O_CREAT | O_TRUNC, 0644); + if (fdb < 0) + { + fprintf (stderr, "Couldn't create file '%s': %s\n", + out, strerror (errno)); + exit (1); + } + + Elf *elfb = elf_begin (fdb, use_mmap ? ELF_C_WRITE_MMAP : ELF_C_WRITE, NULL); + if (elfb == NULL) + { + fprintf (stderr, "Couldn't create ELF file '%s': %s\n", + out, elf_errmsg (-1)); + exit (1); + } + + // Copy ELF header. + GElf_Ehdr ehdr_mema; + GElf_Ehdr *ehdra = gelf_getehdr (elfa, &ehdr_mema); + if (ehdra == NULL) + { + printf ("cannot get ELF header: %s\n", elf_errmsg (-1)); + exit (1); + } + + int class = gelf_getclass (elfa); + // Create an ELF header. + if (gelf_newehdr (elfb, class) == 0) + { + printf ("cannot create ELF header: %s\n", elf_errmsg (-1)); + exit (1); + } + + /* New elf header is an exact copy. */ + GElf_Ehdr ehdr_memb; + GElf_Ehdr *ehdrb = &ehdr_memb; + *ehdrb = *ehdra; + if (gelf_update_ehdr (elfb, ehdrb) == 0) + { + printf ("cannot update ELF header: %s\n", elf_errmsg (-1)); + exit (1); + } + + /* shstrndx is special. (Technically phdrnum and shdrnum are also + special, but they are handled by libelf.) */ + size_t shstrndx; + if (elf_getshdrstrndx (elfa, &shstrndx) < 0) + { + printf ("cannot get shstrndx: %s\n", elf_errmsg (-1)); + exit (1); + } + if (setshstrndx (elfb, shstrndx) < 0) + { + printf ("cannot set shstrndx: %s\n", elf_errmsg (-1)); + exit (1); + } + + /* If there are phdrs, copy them over. */ + size_t phnum; + if (elf_getphdrnum (elfa, &phnum) != 0) + { + printf ("cannot get phdrs: %s\n", elf_errmsg (-1)); + exit (1); + } + + if (phnum > 0) + { + if (gelf_newphdr (elfb, phnum) == 0) + { + printf ("cannot create phdrs: %s\n", elf_errmsg (-1)); + exit (1); + } + + for (size_t cnt = 0; cnt < phnum; ++cnt) + { + GElf_Phdr phdr_mem; + GElf_Phdr *phdr = gelf_getphdr (elfa, cnt, &phdr_mem); + if (phdr == NULL) + { + printf ("couldn't get phdr %zd: %s\n", cnt, elf_errmsg (-1)); + exit (1); + } + + if (gelf_update_phdr (elfb, cnt, phdr) == 0) + { + printf ("couldn't update phdr %zd: %s\n", cnt, elf_errmsg (-1)); + exit (1); + } + } + } + + /* Copy all sections, headers and data. */ + Elf_Scn *scn = NULL; + while ((scn = elf_nextscn (elfa, scn)) != NULL) + { + /* Get the header. */ + GElf_Shdr shdr; + if (gelf_getshdr (scn, &shdr) == NULL) + { + printf ("couldn't get shdr: %s\n", elf_errmsg (-1)); + exit (1); + } + + /* Create new section. */ + Elf_Scn *new_scn = elf_newscn (elfb); + if (new_scn == NULL) + { + printf ("couldn't create new section: %s\n", elf_errmsg (-1)); + exit (1); + } + + if (gelf_update_shdr (new_scn, &shdr) == 0) + { + printf ("couldn't update shdr: %s\n", elf_errmsg (-1)); + exit (1); + } + + /* Copy over section data. */ + Elf_Data *data = NULL; + while ((data = elf_getdata (scn, data)) != NULL) + { + Elf_Data *new_data = elf_newdata (new_scn); + if (new_data == NULL) + { + printf ("couldn't create new section data: %s\n", + elf_errmsg (-1)); + exit (1); + } + *new_data = *data; + } + } + + /* Write everything to disk. If there are any phdrs then we want + the exact same layout. Do we want ELF_F_PERMISSIVE? */ + if (phnum > 0) + elf_flagelf (elfb, ELF_C_SET, ELF_F_LAYOUT); + if (elf_update (elfb, ELF_C_WRITE) < 0) + { + printf ("failure in elf_update: %s\n", elf_errmsg (-1)); + exit (1); + } + + if (elf_end (elfa) != 0) + { + printf ("couldn't cleanup elf '%s': %s\n", in, elf_errmsg (-1)); + exit (1); + } + + if (close (fda) != 0) + { + printf ("couldn't close '%s': %s\n", in, strerror (errno)); + exit (1); + } + + if (elf_end (elfb) != 0) + { + printf ("couldn't cleanup elf '%s': %s\n", out, elf_errmsg (-1)); + exit (1); + } + + if (close (fdb) != 0) + { + printf ("couldn't close '%s': %s\n", out, strerror (errno)); + exit (1); + } +} + +int +main (int argc, const char *argv[]) +{ + elf_version (EV_CURRENT); + + /* Takes the given file, and create a new identical one. */ + if (argc < 3 || argc > 4) + { + fprintf (stderr, "elfcopy [--mmap] in.elf out.elf\n"); + exit (1); + } + + int argn = 1; + bool use_mmap = false; + if (strcmp (argv[argn], "--mmap") == 0) + { + use_mmap = true; + argn++; + } + + const char *in = argv[argn++]; + const char *out = argv[argn]; + copy_elf (in, out, use_mmap); + + return 0; +} diff --git a/tests/run-copyadd-sections.sh b/tests/run-copyadd-sections.sh new file mode 100755 index 00000000..bc20f6ee --- /dev/null +++ b/tests/run-copyadd-sections.sh @@ -0,0 +1,87 @@ +#! /bin/sh +# Copyright (C) 2018 Red Hat, Inc. +# This file is part of elfutils. +# +# This file is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# elfutils is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +. $srcdir/test-subr.sh + +test_copy_and_add () +{ + in_file="$1" + out_file="${in_file}.copy" + out_file_mmap="${out_file}.mmap" + + testfiles ${in_file} + tempfiles ${out_file} ${out_file_mmap} readelf.out + + # Can we copy the file? + testrun ${abs_builddir}/elfcopy ${in_file} ${out_file} + testrun ${abs_top_builddir}/src/elfcmp ${in_file} ${out_file} + + # Can we add a section (in-place)? + testrun ${abs_builddir}/addsections 3 ${out_file} + testrun ${abs_top_builddir}/src/readelf -S ${out_file} > readelf.out + nr=$(grep '.extra' readelf.out | wc -l) + if test ${nr} != 3; then + # Show what went wrong + testrun ${abs_top_builddir}/src/readelf -S ${out_file} + exit 1 + fi + + # Can we add a section (in-place) using ELF_C_WRITE_MMAP? + testrun ${abs_builddir}/elfcopy --mmap ${in_file} ${out_file_mmap} + testrun ${abs_top_builddir}/src/elfcmp ${in_file} ${out_file_mmap} + + # Can we add a section (in-place) using ELF_C_RDWR_MMAP? + # Note we are only adding one sections, adding more might fail + # because mremap cannot extend too much. + testrun ${abs_builddir}/addsections --mmap 1 ${out_file_mmap} + testrun ${abs_top_builddir}/src/readelf -S ${out_file_mmap} > readelf.out + nr=$(grep '.extra' readelf.out | wc -l) + if test ${nr} != 1; then + # Show what went wrong + testrun ${abs_top_builddir}/src/readelf -S ${out_file_mmap} + exit 1 + fi +} + +# A collection of random testfiles to test 32/64bit, little/big endian +# and non-ET_REL (with phdrs)/ET_REL (without phdrs). + +# 32bit, big endian, rel +test_copy_and_add testfile29 + +# 64bit, big endian, rel +test_copy_and_add testfile23 + +# 32bit, little endian, rel +test_copy_and_add testfile9 + +# 64bit, little endian, rel +test_copy_and_add testfile38 + +# 32bit, big endian, non-rel +test_copy_and_add testfile26 + +# 64bit, big endian, non-rel +test_copy_and_add testfile27 + +# 32bit, little endian, non-rel +test_copy_and_add testfile + +# 64bit, little endian, non-rel +test_copy_and_add testfile10 + +exit 0 |