Windows: Make 'git help -a' work.

[git.git] / write_or_die.c

diff --git a/write_or_die.c b/write_or_die.c
index e125e11d3b63e3dab9077d7b414e83e7ff7d16ad..e4c8e225fd232dfd642aa13d7ae5b64b9827c915 100644 (file)
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -34,13 +34,18 @@ void maybe_flush_or_die(FILE *f, const char *desc)
                        return;
        }
        if (fflush(f)) {
-               if (errno == EPIPE)
+               /*
+                * On Windows, EPIPE is returned only by the first write()
+                * after the reading end has closed its handle; subsequent
+                * write()s return EINVAL.
+                */
+               if (errno == EPIPE || errno == EINVAL)
                        exit(0);
                die("write failure on %s: %s", desc, strerror(errno));
        }
 }
 
-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 +62,7 @@ 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;
@@ -78,6 +83,13 @@ int write_in_full(int fd, const void *buf, size_t count)
        return total;
 }
 
+void fsync_or_die(int fd, const char *msg)
+{
+       if (fsync(fd) < 0) {
+               die("%s: fsync error (%s)", msg, strerror(errno));
+       }
+}
+
 void write_or_die(int fd, const void *buf, size_t count)
 {
        if (write_in_full(fd, buf, count) < 0) {