With an old elftoaout, the generation of tftpboot.img fail with "lseek:
invalid argument".
This is due to offset being negative.
Instead of printing this error message, let's print a better one.
Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx>
---
arch/sparc/boot/piggyback.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/sparc/boot/piggyback.c b/arch/sparc/boot/piggyback.c
index a7a38fb4ece0..613e23a1016e 100644
--- a/arch/sparc/boot/piggyback.c
+++ b/arch/sparc/boot/piggyback.c
@@ -154,6 +154,10 @@ static off_t get_hdrs_offset(int kernelfd, const char *filename)
offset -= LOOKBACK;
/* skip a.out header */
offset += AOUT_TEXT_OFFSET;
+ if (offset < 0) {
+ errno = -EINVAL;
+ die("Calculated a negative offset, probably elftoaout generated an invalid image. Did you use a recent elftoaout ?");
+ }
if (lseek(kernelfd, offset, SEEK_SET) < 0)
die("lseek");
if (read(kernelfd, buffer, BUFSIZE) != BUFSIZE)
--
2.26.2
