If we are unable to mmap the a region of the packfile with the mmap()
system call there may be a good reason why, such as a closed file
descriptor or out of address space. Reporting the system level
error message can help to debug such problems.
Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx>
---
sha1_file.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/sha1_file.c b/sha1_file.c
index fab2ab0..7872c2d 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -590,7 +590,9 @@ unsigned char* use_pack(struct packed_git *p,
PROT_READ, MAP_PRIVATE,
p->pack_fd, win->offset);
if (win->base == MAP_FAILED)
- die("packfile %s cannot be mapped.", p->pack_name);
+ die("packfile %s cannot be mapped: %s",
+ p->pack_name,
+ strerror(errno));
win->next = p->windows;
p->windows = win;
}
--
1.4.4.3.g87d8
-
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