diff options
author | 2016-05-18 13:18:31 +0300 | |
---|---|---|
committer | 2016-05-18 13:42:15 +0300 | |
commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/roms/ipxe/src/arch/i386/image/elfboot.c | |
parent | 5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff) |
These changes are the raw update to qemu-2.6.
Collission happened in the following patches:
migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)
The code provided by the patches was already in the upstreamed
version.
Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/roms/ipxe/src/arch/i386/image/elfboot.c')
-rw-r--r-- | qemu/roms/ipxe/src/arch/i386/image/elfboot.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/qemu/roms/ipxe/src/arch/i386/image/elfboot.c b/qemu/roms/ipxe/src/arch/i386/image/elfboot.c index 0f6957f02..dc3568929 100644 --- a/qemu/roms/ipxe/src/arch/i386/image/elfboot.c +++ b/qemu/roms/ipxe/src/arch/i386/image/elfboot.c @@ -15,9 +15,13 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <errno.h> #include <elf.h> @@ -75,6 +79,27 @@ static int elfboot_exec ( struct image *image ) { } /** + * Check that ELF segment uses flat physical addressing + * + * @v image ELF file + * @v phdr ELF program header + * @v dest Destination address + * @ret rc Return status code + */ +static int elfboot_check_segment ( struct image *image, Elf_Phdr *phdr, + physaddr_t dest ) { + + /* Check that ELF segment uses flat physical addressing */ + if ( phdr->p_vaddr != dest ) { + DBGC ( image, "ELF %p uses virtual addressing (phys %x, " + "virt %x)\n", image, phdr->p_paddr, phdr->p_vaddr ); + return -ENOEXEC; + } + + return 0; +} + +/** * Probe ELF image * * @v image ELF file @@ -91,14 +116,24 @@ static int elfboot_probe ( struct image *image ) { [EI_DATA] = ELFDATA2LSB, [EI_VERSION] = EV_CURRENT, }; + physaddr_t entry; + physaddr_t max; + int rc; /* Read ELF header */ copy_from_user ( &ehdr, image->data, 0, sizeof ( ehdr ) ); if ( memcmp ( ehdr.e_ident, e_ident, sizeof ( e_ident ) ) != 0 ) { - DBG ( "Invalid ELF identifier\n" ); + DBGC ( image, "Invalid ELF identifier\n" ); return -ENOEXEC; } + /* Check that this image uses flat physical addressing */ + if ( ( rc = elf_segments ( image, &ehdr, elfboot_check_segment, + &entry, &max ) ) != 0 ) { + DBGC ( image, "Unloadable ELF image\n" ); + return rc; + } + return 0; } |