Elf32_Phdr *xelf32_newphdr(Elf *e, size_t cnt) { Elf32_Phdr *phdr = elf32_newphdr(e, cnt); if (phdr == NULL) { eprintf("elf_newphdr() failed: %s", elf_errmsg(-1)); exit(EXIT_FAILURE); } return phdr; }
int main (int argc, char *argv[]) { Elf *elf; int result = 0; int fd; char fname[] = "newfile-XXXXXX"; fd = mkstemp (fname); if (fd == -1) { printf ("cannot create temporary file: %m\n"); exit (1); } /* Remove the file when we exit. */ unlink (fname); elf_version (EV_CURRENT); elf = elf_begin (fd, ELF_C_WRITE, NULL); if (elf == NULL) { printf ("elf_begin: %s\n", elf_errmsg (-1)); result = 1; } else { if (elf32_newehdr (elf) == NULL) { printf ("elf32_newehdr: %s\n", elf_errmsg (-1)); result = 1; } else { Elf32_Ehdr *ehdr = elf32_getehdr (elf); if (ehdr == NULL) { printf ("elf32_getehdr: %s\n", elf_errmsg (-1)); result = 1; } else { int i; if (argc > 1) /* Use argc as a debugging flag. */ print_ehdr (ehdr); /* Some tests. */ for (i = 0; i < EI_NIDENT; ++i) if (ehdr->e_ident[i] != 0) { printf ("ehdr->e_ident[%d] != 0\n", i); result = 1; break; } #define VALUE_TEST(name, val) \ if (ehdr->name != val) \ { \ printf ("ehdr->%s != %d\n", #name, val); \ result = 1; \ } #define ZERO_TEST(name) VALUE_TEST (name, 0) ZERO_TEST (e_type); ZERO_TEST (e_machine); ZERO_TEST (e_version); ZERO_TEST (e_entry); ZERO_TEST (e_phoff); ZERO_TEST (e_shoff); ZERO_TEST (e_flags); ZERO_TEST (e_ehsize); ZERO_TEST (e_phentsize); ZERO_TEST (e_phnum); ZERO_TEST (e_shentsize); ZERO_TEST (e_shnum); ZERO_TEST (e_shstrndx); if (elf32_newphdr (elf, 10) == NULL) { printf ("elf32_newphdr: %s\n", elf_errmsg (-1)); result = 1; } else { if (argc > 1) print_ehdr (ehdr); ehdr = elf32_getehdr (elf); if (ehdr == NULL) { printf ("elf32_getehdr (#2): %s\n", elf_errmsg (-1)); result = 1; } else { ZERO_TEST (e_type); ZERO_TEST (e_machine); ZERO_TEST (e_version); ZERO_TEST (e_entry); ZERO_TEST (e_phoff); ZERO_TEST (e_shoff); ZERO_TEST (e_flags); ZERO_TEST (e_ehsize); VALUE_TEST (e_phentsize, (int) sizeof (Elf32_Phdr)); VALUE_TEST (e_phnum, 10); ZERO_TEST (e_shentsize); ZERO_TEST (e_shnum); ZERO_TEST (e_shstrndx); } } } } (void) elf_end (elf); } return result; }