unpack-trees: allow Porcelain to give different error messages

diff --git a/write_or_die.c b/write_or_die.c
index e125e11d3b63e3dab9077d7b414e83e7ff7d16ad..32f99140205f8969d8a884b3cf9448eec3f1dd16 100644 (file)
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -40,7 +40,7 @@ void maybe_flush_or_die(FILE *f, const char *desc)
        }
 }
 
-int read_in_full(int fd, void *buf, size_t count)
+ssize_t read_in_full(int fd, void *buf, size_t count)
 {
        char *p = buf;
        ssize_t total = 0;
@@ -57,7 +57,7 @@ int read_in_full(int fd, void *buf, size_t count)
        return total;
 }
 
-int write_in_full(int fd, const void *buf, size_t count)
+ssize_t write_in_full(int fd, const void *buf, size_t count)
 {
        const char *p = buf;
        ssize_t total = 0;