X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-common%2Fmalloc.c;h=52e0962df25a25607f221435d2f16593b5fd8222;hb=141a46406d1bbbf6676299b41f4c90ce1004eb71;hp=19e1e590014a56c2e8b2aa56dcb043ebf1b7289b;hpb=e63a65b3955b173a3e8d6b78c6377a518a9922d6;p=catta

diff --git a/avahi-common/malloc.c b/avahi-common/malloc.c
index 19e1e59..52e0962 100644
--- a/avahi-common/malloc.c
+++ b/avahi-common/malloc.c
@@ -27,18 +27,78 @@
 #include <string.h>
 #include <assert.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include "malloc.h"
 
 static const AvahiAllocator *allocator = NULL;
 
+static void oom(void) AVAHI_GCC_NORETURN;
+
+static void oom(void) {
+    
+    static const char msg[] = "Out of memory, aborting ...\n";
+    const char *n = msg;
+
+    while (strlen(n) > 0) {
+        ssize_t r;
+        
+        if ((r = write(2, n, strlen(n))) < 0)
+            break;
+
+        n += r;
+    }
+
+    abort();
+}
+
+/* Default implementation for avahi_malloc() */
+static void* xmalloc(size_t size) {
+    void *p;
+
+    if (size == 0)
+        return NULL;
+
+    if (!(p = malloc(size)))
+        oom();
+
+    return p;
+}
+
+/* Default implementation for avahi_realloc() */
+static void *xrealloc(void *p, size_t size) {
+
+    if (size == 0) {
+        free(p);
+        return NULL;
+    }
+
+    if (!(p = realloc(p, size)))
+        oom();
+
+    return p;
+}
+
+/* Default implementation for avahi_calloc() */
+static void *xcalloc(size_t nmemb, size_t size) {
+    void *p;
+    
+    if (size == 0 || nmemb == 0)
+        return NULL;
+
+    if (!(p = calloc(nmemb, size)))
+        oom();
+
+    return p;
+}
+
 void *avahi_malloc(size_t size) {
 
     if (size <= 0)
         return NULL;
     
     if (!allocator)
-        return malloc(size);
+        return xmalloc(size);
 
     assert(allocator->malloc);
     return allocator->malloc(size);
@@ -51,7 +111,7 @@ void *avahi_malloc0(size_t size) {
         return NULL;
 
     if (!allocator)
-        return calloc(1, size);
+        return xcalloc(1, size);
 
     if (allocator->calloc)
         return allocator->calloc(1, size);
@@ -79,8 +139,13 @@ void avahi_free(void *p) {
 
 void *avahi_realloc(void *p, size_t size) {
 
+    if (size == 0) {
+        avahi_free(p);
+        return NULL;
+    }
+
     if (!allocator)
-        return realloc(p, size);
+        return xrealloc(p, size);
 
     assert(allocator->realloc);
     return allocator->realloc(p, size);
@@ -104,16 +169,16 @@ char *avahi_strdup(const char *s) {
 char *avahi_strndup(const char *s, size_t max) {
     char *r;
     size_t size;
+    const char *p;
     
     if (!s)
         return NULL;
 
-    size = strlen(s);
-
-    if (size > max)
-        size = max;
+    for (p = s, size = 0;
+         size < max && *p;
+         p++, size++);
     
-    if (!(r = avahi_malloc(size+1)))
+    if (!(r = avahi_new(char, size+1)))
         return NULL;
 
     memcpy(r, s, size);
@@ -127,7 +192,7 @@ void avahi_set_allocator(const AvahiAllocator *a) {
 }
 
 char *avahi_strdup_vprintf(const char *fmt, va_list ap) {
-    size_t len = 100;
+    size_t len = 80;
     char *buf;
     
     assert(fmt);
@@ -138,8 +203,13 @@ char *avahi_strdup_vprintf(const char *fmt, va_list ap) {
     for (;;) {
         int n;
         char *nbuf;
+        va_list ap2;
+
+        va_copy (ap2, ap);
         
-        n = vsnprintf(buf, len, fmt, ap);
+        n = vsnprintf(buf, len, fmt, ap2);
+
+        va_end (ap2);
 
         if (n >= 0 && n < (int) len)
             return buf;
@@ -161,6 +231,8 @@ char *avahi_strdup_vprintf(const char *fmt, va_list ap) {
 char *avahi_strdup_printf(const char *fmt, ... ) {
     char *s;
     va_list ap;
+
+    assert(fmt);
     
     va_start(ap, fmt);
     s = avahi_strdup_vprintf(fmt, ap);
@@ -169,3 +241,13 @@ char *avahi_strdup_printf(const char *fmt, ... ) {
     return s;
 }
 
+void *avahi_memdup(const void *s, size_t l) {
+    void *p;
+    assert(s);
+
+    if (!(p = avahi_malloc(l)))
+        return NULL;
+
+    memcpy(p, s, l);
+    return p;
+}