[Dazuko-devel] [PATCH] adjust showfiles.c to new signal semantic

[Lino Sanfilippo]

Hi,

this patch adjusts the test program (showfiles.c) to the new signal 
semantic that is used by dazukofs.
Without this the program may not be interruptable by SIGINT, SIGTERM and 
SIGHUP
(depending on the underlaying signal() call implementation).

It simply removes the unportable signal() with the portable sigaction() 
function.
It applies against dazukofs-3.1.4-rc3.

Regards,
Lino


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diff -Nurp dazukofs-3.1.4-rc3/test/showfiles.c 
dazukofs-3.1.4-rc3-PATCH1/test/showfiles.c
--- dazukofs-3.1.4-rc3/test/showfiles.c 2008-10-25 00:08:30.000000000 +0200
+++ dazukofs-3.1.4-rc3-PATCH1/test/showfiles.c  2010-11-12 13:26:26.000000000 
+0100
@@ -25,7 +25,7 @@
 #include <errno.h>
 #include <signal.h>
 
-static int running = 1;
+static volatile sig_atomic_t running = 1;
 
 static void print_access(struct dazukofs_access *acc)
 {
@@ -48,12 +48,26 @@ static void sigterm(int sig)
 
 int main(void)
 {
+       struct sigaction sa;
        dazukofs_handle_t hndl;
        struct dazukofs_access acc;
 
-       signal(SIGHUP, sigterm);
-       signal(SIGINT, sigterm);
-       signal(SIGTERM, sigterm);
+       memset(&sa, 0, sizeof(sa));
+
+       memset(&sa, 0, sizeof(sa));
+       sa.sa_handler = sigterm;
+       if (sigaction(SIGHUP, &sa, NULL)) {
+               perror("install SIGHUP handler");
+               return -1;
+       }
+       if (sigaction(SIGINT, &sa, NULL)) {
+               perror("install SIGINT handler");
+               return -1;
+       }
+       if (sigaction(SIGTERM, &sa, NULL)) {
+               perror("install SIGTERM handler");
+               return -1;
+       }
 
        hndl = dazukofs_open("dazukofs_example", DAZUKOFS_TRACK_GROUP);
        if (!hndl) {