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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2018-01-15 08:17:08 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-01-16 01:27:27 +0100 |
| commit | 385d11b152c4eb638eeb769edcb3249533bb9a00 (patch) | |
| tree | 39ba25acbe7bfaf846286b86376a5057c7bd5e53 /tools/objtool/elf.c | |
| parent | 2a0098d70640dda192a79966c14d449e7a34d675 (diff) | |
| download | lwn-385d11b152c4eb638eeb769edcb3249533bb9a00.tar.gz lwn-385d11b152c4eb638eeb769edcb3249533bb9a00.zip | |
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/elf.c')
| -rw-r--r-- | tools/objtool/elf.c | 4 |
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; } |