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authorJosh Poimboeuf <jpoimboe@redhat.com>2018-01-15 17:17:08 +0300
committerIngo Molnar <mingo@kernel.org>2018-01-16 03:27:27 +0300
commit385d11b152c4eb638eeb769edcb3249533bb9a00 (patch)
tree39ba25acbe7bfaf846286b86376a5057c7bd5e53 /tools/objtool
parent2a0098d70640dda192a79966c14d449e7a34d675 (diff)
downloadlinux-385d11b152c4eb638eeb769edcb3249533bb9a00.tar.xz
objtool: Improve error message for bad file argument
If a nonexistent file is supplied to objtool, it complains with a non-helpful error: open: No such file or directory Improve it to: objtool: Can't open 'foo': No such file or directory Reported-by: Markus <M4rkusXXL@web.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/406a3d00a21225eee2819844048e17f68523ccf6.1516025651.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool')
-rw-r--r--tools/objtool/elf.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 24460155c82c..c1c338661699 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -26,6 +26,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <errno.h>
#include "elf.h"
#include "warn.h"
@@ -358,7 +359,8 @@ struct elf *elf_open(const char *name, int flags)
elf->fd = open(name, flags);
if (elf->fd == -1) {
- perror("open");
+ fprintf(stderr, "objtool: Can't open '%s': %s\n",
+ name, strerror(errno));
goto err;
}