diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ipv6.h | 6 | ||||
| -rw-r--r-- | lib/resource.c | 37 | ||||
| -rw-r--r-- | lib/resource.h | 8 | ||||
| -rw-r--r-- | lib/socket.h | 7 | ||||
| -rw-r--r-- | lib/xmalloc.c | 20 |
5 files changed, 75 insertions, 3 deletions
@@ -31,7 +31,11 @@ typedef struct ipv6_addr { #define IPA_NONE _MI(0,0,0,0) -#define ipa_equal(x,y) (!memcmp(&(x),&(y),sizeof(ip_addr))) +#define ipa_equal(x,y) ({ ip_addr _a=(x), _b=(y); \ + _I0(_a) == _I0(_b) && \ + _I1(_a) == _I1(_b) && \ + _I2(_a) == _I2(_b) && \ + _I3(_a) == _I3(_b); }) #define ipa_nonzero(x) ({ ip_addr _a=(x); (_I0(_a) || _I1(_a) || _I2(_a) || _I3(_a)); }) #define ipa_and(x,y) ({ ip_addr _a=(x), _b=(y); \ _MI(_I0(_a) & _I0(_b), \ diff --git a/lib/resource.c b/lib/resource.c index 9e62681..289af93 100644 --- a/lib/resource.c +++ b/lib/resource.c @@ -328,6 +328,42 @@ mb_allocz(pool *p, unsigned size) } /** + * mb_realloc - reallocate a memory block + * @p: pool + * @m: memory block + * @size: new size of the block + * + * mb_realloc() changes the size of the memory block @m to a given size. + * The contents will be unchanged to the minimum of the old and new sizes; + * newly allocated memory will be uninitialized. If @m is NULL, the call + * is equivalent to mb_alloc(@p, @size). + * + * Like mb_alloc(), mb_realloc() also returns a pointer to the memory + * chunk , not to the resource, hence you have to free it using + * mb_free(), not rfree(). + */ +void * +mb_realloc(pool *p, void *m, unsigned size) +{ + struct mblock *ob = NULL; + + if (m) + { + ob = SKIP_BACK(struct mblock, data, m); + if (ob->r.n.next) + rem_node(&ob->r.n); + } + + struct mblock *b = xrealloc(ob, sizeof(struct mblock) + size); + + b->r.class = &mb_class; + add_tail(&p->inside, &b->r.n); + b->size = size; + return b->data; +} + + +/** * mb_free - free a memory block * @m: memory block * @@ -339,3 +375,4 @@ mb_free(void *m) struct mblock *b = SKIP_BACK(struct mblock, data, m); rfree(b); } + diff --git a/lib/resource.h b/lib/resource.h index 42ed26e..8dd441f 100644 --- a/lib/resource.h +++ b/lib/resource.h @@ -47,6 +47,7 @@ extern pool root_pool; void *mb_alloc(pool *, unsigned size); void *mb_allocz(pool *, unsigned size); +void *mb_realloc(pool *p, void *m, unsigned size); void mb_free(void *); /* Memory pools with linear allocation */ @@ -75,12 +76,13 @@ void sl_free(slab *, void *); #ifdef HAVE_LIBDMALLOC /* * The standard dmalloc macros tend to produce lots of namespace - * conflicts and we use only xmalloc and xfree, so we can define - * the stubs ourselves. + * conflicts and we use only xmalloc, xrealloc and xfree, so we + * can define the stubs ourselves. */ #define DMALLOC_DISABLE #include <dmalloc.h> #define xmalloc(size) _xmalloc_leap(__FILE__, __LINE__, size) +#define xrealloc(size) _xrealloc_leap(__FILE__, __LINE__, size) #define xfree(ptr) _xfree_leap(__FILE__, __LINE__, ptr) #else /* @@ -89,7 +91,9 @@ void sl_free(slab *, void *); * the renaming. */ #define xmalloc bird_xmalloc +#define xrealloc bird_xrealloc void *xmalloc(unsigned); +void *xrealloc(void *, unsigned); #define xfree(x) free(x) #endif diff --git a/lib/socket.h b/lib/socket.h index 5fe9193..f192260 100644 --- a/lib/socket.h +++ b/lib/socket.h @@ -20,6 +20,7 @@ typedef struct birdsock { unsigned sport, dport; /* 0 = unspecified (for IP: protocol type) */ int tos; /* TOS and priority, -1 = default */ int ttl; /* Time To Live, -1 = default */ + u32 flags; struct iface *iface; /* Interface; specify this for broad/multicast sockets */ byte *rbuf, *rpos; /* NULL=allocate automatically */ @@ -57,6 +58,12 @@ sk_send_buffer_empty(sock *sk) return sk->tbuf == sk->tpos; } + +/* Socket flags */ + +#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */ + + /* * Socket types SA SP DA DP IF TTL SendTo (?=may, -=must not, *=must) */ diff --git a/lib/xmalloc.c b/lib/xmalloc.c index bc386c8..da2f094 100644 --- a/lib/xmalloc.c +++ b/lib/xmalloc.c @@ -32,4 +32,24 @@ xmalloc(unsigned size) die("Unable to allocate %d bytes of memory", size); } +/** + * xrealloc - realloc with checking + * @ptr: original memory block + * @size: block size + * + * This function is equivalent to realloc() except that in case of + * failure it calls die() to quit the program instead of returning + * a %NULL pointer. + * + * Wherever possible, please use the memory resources instead. + */ +void * +xrealloc(void *ptr, unsigned size) +{ + void *p = realloc(ptr, size); + if (p) + return p; + die("Unable to allocate %d bytes of memory", size); +} + #endif |