From 1878787797cbb019eeefe6f905514dcd557302b6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 9 Jan 2023 00:14:02 -0500 Subject: [PATCH] alpha/boot/tools/objstrip: fix the check for ELF header Just memcmp() with ELFMAG - that's the normal way to do it in userland code, which that thing is. Besides, that has the benefit of actually building - str_has_prefix() is *NOT* present in . Fixes: 5f14596e55de "alpha: Replace strncmp with str_has_prefix" Signed-off-by: Al Viro --- arch/alpha/boot/tools/objstrip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/alpha/boot/tools/objstrip.c b/arch/alpha/boot/tools/objstrip.c index 08b430d25a31..7cf92d172dce 100644 --- a/arch/alpha/boot/tools/objstrip.c +++ b/arch/alpha/boot/tools/objstrip.c @@ -148,7 +148,7 @@ main (int argc, char *argv[]) #ifdef __ELF__ elf = (struct elfhdr *) buf; - if (elf->e_ident[0] == 0x7f && str_has_prefix((char *)elf->e_ident + 1, "ELF")) { + if (memcmp(&elf->e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0) { if (elf->e_type != ET_EXEC) { fprintf(stderr, "%s: %s is not an ELF executable\n", prog_name, inname);