[PATCH] strbuf: describe the return value of strbuf_read_file()

[Pranit Bauva <pranit.bauva@gmail.com>]

Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
---
It is easy to be misguided on the return value of the function
strbuf_read_file(). It does follow the pattern of other standard functions
for reading files but its better to explicitly specify it.

 strbuf.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/strbuf.h b/strbuf.h
index 7987405..4b487f7 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -377,6 +377,8 @@ extern ssize_t strbuf_read_once(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.
+ * Return the number of bytes read or -1 if some error occurred while
+ * opening or reading the file.
  */
 extern ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
 
-- 
2.8.4