/*
* Open 'filename', read in program and and return 0 if ok 1 on error.
* Fill in marks
*/
int
loadfile(const char *fname, u_long *marks, int flags)
{
union {
#ifdef BOOT_ECOFF
struct ecoff_exechdr coff;
#endif
#ifdef BOOT_ELF
Elf_Ehdr elf;
#endif
#ifdef BOOT_AOUT
struct exec aout;
#endif
} hdr;
ssize_t nr;
int fd, rval;
/* Open the file. */
if ((fd = open(fname, 0)) < 0) {
WARN(("open %s", fname ? fname : "<default>"));
return -1;
}
/* Read the exec header. */
if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) {
WARN(("read header"));
goto err;
}
#ifdef BOOT_ECOFF
if (!ECOFF_BADMAG(&hdr.coff)) {
rval = coff_exec(fd, &hdr.coff, marks, flags);
} else
#endif
#ifdef BOOT_ELF
if (memcmp(hdr.elf.e_ident, ELFMAG, SELFMAG) == 0 &&
hdr.elf.e_ident[EI_CLASS] == ELFCLASS) {
#ifdef BOOT_ZBOOT
rval = zboot_exec(fd, marks, flags);
#else
rval = elf_exec(fd, &hdr.elf, marks, flags);
#endif
} else
#endif
#ifdef BOOT_AOUT
if (OKMAGIC(N_GETMAGIC(hdr.aout))
#ifndef NO_MID_CHECK
&& N_GETMID(hdr.aout) == MID_MACHINE
#endif
) {
rval = aout_exec(fd, &hdr.aout, marks, flags);
} else
#endif
{
rval = 1;
errno = EFTYPE;
WARN(("%s", fname ? fname : "<default>"));
}
if (rval == 0) {
PROGRESS(("=0x%lx\n", marks[MARK_END] - marks[MARK_START]));
return fd;
}
err:
(void)close(fd);
return -1;
}
/*
* Read in program from the given file descriptor.
* Return error code (0 on success).
* Fill in marks.
*/
int
fdloadfile(int fd, u_long *marks, int flags)
{
union {
#ifdef BOOT_ECOFF
struct ecoff_exechdr coff;
#endif
#ifdef BOOT_ELF32
Elf32_Ehdr elf32;
#endif
#ifdef BOOT_ELF64
Elf64_Ehdr elf64;
#endif
#ifdef BOOT_AOUT
struct exec aout;
#endif
} hdr;
ssize_t nr;
int rval;
/* Read the exec header. */
if (lseek(fd, 0, SEEK_SET) == (off_t)-1)
goto err;
nr = read(fd, &hdr, sizeof(hdr));
if (nr == -1) {
WARN(("read header failed"));
goto err;
}
if (nr != sizeof(hdr)) {
WARN(("read header short"));
errno = EFTYPE;
goto err;
}
#ifdef BOOT_ECOFF
if (!ECOFF_BADMAG(&hdr.coff)) {
rval = loadfile_coff(fd, &hdr.coff, marks, flags);
} else
#endif
#ifdef BOOT_ELF32
if (memcmp(hdr.elf32.e_ident, ELFMAG, SELFMAG) == 0 &&
hdr.elf32.e_ident[EI_CLASS] == ELFCLASS32) {
netbsd_elf_class = ELFCLASS32;
rval = loadfile_elf32(fd, &hdr.elf32, marks, flags);
} else
#endif
#ifdef BOOT_ELF64
if (memcmp(hdr.elf64.e_ident, ELFMAG, SELFMAG) == 0 &&
hdr.elf64.e_ident[EI_CLASS] == ELFCLASS64) {
netbsd_elf_class = ELFCLASS64;
rval = loadfile_elf64(fd, &hdr.elf64, marks, flags);
} else
#endif
#ifdef BOOT_AOUT
if (OKMAGIC(N_GETMAGIC(hdr.aout))
#ifndef NO_MID_CHECK
&& N_GETMID(hdr.aout) == MID_MACHINE
#endif
) {
rval = loadfile_aout(fd, &hdr.aout, marks, flags);
} else
#endif
{
rval = 1;
errno = EFTYPE;
}
if (rval == 0) {
if ((flags & LOAD_ALL) != 0)
PROGRESS(("=0x%lx\n",
marks[MARK_END] - marks[MARK_START]));
return 0;
}
err:
return errno;
}