[PATCH 1/3] x86/vdso2c: Correct err messages on file opening

From: Dmitry Safonov
Date: Mon Apr 20 2020 - 14:33:09 EST


err() message in main() is misleading: it should print `outfilename`,
which is argv[3], not argv[2].

Correct error messages to be more precise about what failed and for
which file.

Co-developed-by: Andrei Vagin <avagin@xxxxxxxxxx>
Signed-off-by: Andrei Vagin <avagin@xxxxxxxxxx>
Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx>
---
arch/x86/entry/vdso/vdso2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/entry/vdso/vdso2c.c b/arch/x86/entry/vdso/vdso2c.c
index 3842873b3ae3..7380908045c7 100644
--- a/arch/x86/entry/vdso/vdso2c.c
+++ b/arch/x86/entry/vdso/vdso2c.c
@@ -187,7 +187,7 @@ static void map_input(const char *name, void **addr, size_t *len, int prot)

int fd = open(name, O_RDONLY);
if (fd == -1)
- err(1, "%s", name);
+ err(1, "open(%s)", name);

tmp_len = lseek(fd, 0, SEEK_END);
if (tmp_len == (off_t)-1)
@@ -240,7 +240,7 @@ int main(int argc, char **argv)
outfilename = argv[3];
outfile = fopen(outfilename, "w");
if (!outfile)
- err(1, "%s", argv[2]);
+ err(1, "fopen(%s)", outfilename);

go(raw_addr, raw_len, stripped_addr, stripped_len, outfile, name);

--
2.26.0