In recent Fedora builds, the '-D _FORTIFY_SOURCE=2' compile

[nfs-utils.git] / support / nfs / cacheio.c

diff --git a/support/nfs/cacheio.c b/support/nfs/cacheio.c
index 48292f8a5d49841c48f323c1b5977691396ef6be..f30373402d0888009abd53f07f14da690c45f6dd 100644 (file)
--- a/support/nfs/cacheio.c
+++ b/support/nfs/cacheio.c
@@ -24,6 +24,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <time.h>
+#include <errno.h>
 
 void qword_add(char **bpp, int *lp, char *str)
 {
@@ -125,7 +126,10 @@ void qword_print(FILE *f, char *str)
        char *bp = qword_buf;
        int len = sizeof(qword_buf);
        qword_add(&bp, &len, str);
-       fwrite(qword_buf, bp-qword_buf, 1, f);
+       if (fwrite(qword_buf, bp-qword_buf, 1, f) != 1) {
+               xlog_warn("qword_print: fwrite failed: errno %d (%s)",
+                       errno, strerror(errno));
+       }
 }
 
 void qword_printhex(FILE *f, char *str, int slen)
@@ -133,7 +137,10 @@ void qword_printhex(FILE *f, char *str, int slen)
        char *bp = qword_buf;
        int len = sizeof(qword_buf);
        qword_addhex(&bp, &len, str, slen);
-       fwrite(qword_buf, bp-qword_buf, 1, f);
+       if (fwrite(qword_buf, bp-qword_buf, 1, f) != 1) {
+               xlog_warn("qword_printhex: fwrite failed: errno %d (%s)",
+                       errno, strerror(errno));
+       }
 }
 
 void qword_printint(FILE *f, int num)
@@ -318,7 +325,10 @@ cache_flush(int force)
                sprintf(path, "/proc/net/rpc/%s/flush", cachelist[c]);
                fd = open(path, O_RDWR);
                if (fd >= 0) {
-                       write(fd, stime, strlen(stime));
+                       if (write(fd, stime, strlen(stime)) != strlen(stime)) {
+                               xlog_warn("Writing to '%s' failed: errno %d (%s)",
+                               path, errno, strerror(errno));
+                       }
                        close(fd);
                }
        }