strbuf: strbuf_read_file() should return ssize_t

It is currently declared to return int, which could overflow for
large files.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/strbuf.c b/strbuf.c
index 88cafd4a70b8179a4e911c18704fb4ab0f2a21f5..b4da9f5d05fc1f22f8910a21d8e352f2e5e9673f 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -481,9 +481,10 @@ int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
        return 0;
 }
 
-int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
+ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
 {
-       int fd, len;
+       int fd;
+       ssize_t len;
 
        fd = open(path, O_RDONLY);
        if (fd < 0)

diff --git a/strbuf.h b/strbuf.h
index 1883494ca3ad4931640c2a295c94800e287c1664..1ea9d0bdeb0980dcaa8670aa43e4ff703fd9d6b8 100644 (file)
--- a/strbuf.h
+++ b/strbuf.h
@@ -364,7 +364,7 @@ extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint);
  * Read the contents of a file, specified by its path. The third argument
  * can be used to give a hint about the file size, to avoid reallocs.
  */
-extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
+extern ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
 
 /**
  * Read the target of a symbolic link, specified by its path.  The third