Make global symbols static as possible

There are some calls (e.g. getpwnam(3)) that can lead to dlopening
other libraries that could jump to symbol with name clashing to one of
global quota symbols. (e.g. Name server switch plug-in nss_db calls
dirname(3) that's already defined in edquota.c and tht can cause
segmentation fault.)

Although it's not possible to solve all these problems, making as much
as possible global objects and functions static is the best thing we
can do to avoid name space polution.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 4 insertions, 4 deletions

diff --git a/quotaon.c b/quotaon.c
index e12c58d..ee9a02e 100644
--- a/quotaon.c
+++ b/quotaon.c
@@ -55,11 +55,11 @@
 #define FL_STAT 16
 #define FL_OFF 32
 
-int flags, fmt = -1;
+static int flags, fmt = -1;
 char *progname;
-char **mntpoints;
-int mntcnt;
-char *xarg = NULL;
+static char **mntpoints;
+static int mntcnt;
+static char *xarg = NULL;
 
 static void usage(void)
 {