diff options
| author | jdp <jdp@FreeBSD.org> | 1998-10-14 16:16:50 +0000 |
|---|---|---|
| committer | jdp <jdp@FreeBSD.org> | 1998-10-14 16:16:50 +0000 |
| commit | f417a55b2f876ac7d08c9191e450e257179228c4 (patch) | |
| tree | 449731286a37b58424be9bb859f6c77e7bd0793e /usr.bin/gcore | |
| parent | 1f69c742ab24044ec9addb4057e26f4e68ae479f (diff) | |
| download | FreeBSD-src-f417a55b2f876ac7d08c9191e450e257179228c4.zip FreeBSD-src-f417a55b2f876ac7d08c9191e450e257179228c4.tar.gz | |
Check the executable's header to make sure it is a valid executable.
If it is ELF, print a diagnostic saying that it is not supported yet
by this program. This is a stop-gap anti-bug-report measure because
it looks like there won't be time to implement gcore's ELF support
before 3.0 is released.
Diffstat (limited to 'usr.bin/gcore')
| -rw-r--r-- | usr.bin/gcore/aoutcore.c | 10 | ||||
| -rw-r--r-- | usr.bin/gcore/gcore.c | 10 |
2 files changed, 18 insertions, 2 deletions
diff --git a/usr.bin/gcore/aoutcore.c b/usr.bin/gcore/aoutcore.c index a943a30..8ab7b0b 100644 --- a/usr.bin/gcore/aoutcore.c +++ b/usr.bin/gcore/aoutcore.c @@ -42,7 +42,7 @@ static const char copyright[] = static char sccsid[] = "@(#)gcore.c 8.2 (Berkeley) 9/23/93"; #endif static const char rcsid[] = - "$Id: gcore.c,v 1.8 1998/08/24 16:25:30 wosch Exp $"; + "$Id: gcore.c,v 1.9 1998/09/14 10:09:30 des Exp $"; #endif /* not lint */ /* @@ -66,6 +66,7 @@ static const char rcsid[] = #include <machine/vmparam.h> #include <a.out.h> +#include <elf.h> #include <err.h> #include <fcntl.h> #include <kvm.h> @@ -174,6 +175,13 @@ main(argc, argv) if (cnt != sizeof(exec)) errx(1, "%s exec header: %s", binfile, cnt > 0 ? strerror(EIO) : strerror(errno)); + if (N_BADMAG(exec)) { + const Elf_Ehdr *ehdr = (const Elf_Ehdr *)&exec; + + if (IS_ELF(*ehdr)) + errx(1, "ELF executables are not supported yet"); + errx(1, "Invalid executable file"); + } /* check the text segment size of the executable and the process */ if (exec.a_text != ptoa(ki->kp_eproc.e_vm.vm_tsize)) diff --git a/usr.bin/gcore/gcore.c b/usr.bin/gcore/gcore.c index a943a30..8ab7b0b 100644 --- a/usr.bin/gcore/gcore.c +++ b/usr.bin/gcore/gcore.c @@ -42,7 +42,7 @@ static const char copyright[] = static char sccsid[] = "@(#)gcore.c 8.2 (Berkeley) 9/23/93"; #endif static const char rcsid[] = - "$Id: gcore.c,v 1.8 1998/08/24 16:25:30 wosch Exp $"; + "$Id: gcore.c,v 1.9 1998/09/14 10:09:30 des Exp $"; #endif /* not lint */ /* @@ -66,6 +66,7 @@ static const char rcsid[] = #include <machine/vmparam.h> #include <a.out.h> +#include <elf.h> #include <err.h> #include <fcntl.h> #include <kvm.h> @@ -174,6 +175,13 @@ main(argc, argv) if (cnt != sizeof(exec)) errx(1, "%s exec header: %s", binfile, cnt > 0 ? strerror(EIO) : strerror(errno)); + if (N_BADMAG(exec)) { + const Elf_Ehdr *ehdr = (const Elf_Ehdr *)&exec; + + if (IS_ELF(*ehdr)) + errx(1, "ELF executables are not supported yet"); + errx(1, "Invalid executable file"); + } /* check the text segment size of the executable and the process */ if (exec.a_text != ptoa(ki->kp_eproc.e_vm.vm_tsize)) |
