fix missing parts of r19997.

[openwrt/svn-archive/archive.git] / package / libpcap / patches / 201-space_optimization.patch

diff --git a/package/libpcap/patches/201-space_optimization.patch b/package/libpcap/patches/201-space_optimization.patch
new file mode 100644 (file)
index 0000000..29c293b
--- /dev/null
+++ b/package/libpcap/patches/201-space_optimization.patch
@@ -0,0 +1,133 @@
+--- a/gencode.c
++++ b/gencode.c
+@@ -439,20 +439,6 @@ pcap_compile_nopcap(int snaplen_arg, int
+ }
+ 
+ /*
+- * Clean up a "struct bpf_program" by freeing all the memory allocated
+- * in it.
+- */
+-void
+-pcap_freecode(struct bpf_program *program)
+-{
+-      program->bf_len = 0;
+-      if (program->bf_insns != NULL) {
+-              free((char *)program->bf_insns);
+-              program->bf_insns = NULL;
+-      }
+-}
+-
+-/*
+  * Backpatch the blocks in 'list' to 'target'.  The 'sense' field indicates
+  * which of the jt and jf fields has been resolved and which is a pointer
+  * back to another unresolved block (or nil).  At least one of the fields
+--- a/pcap.c
++++ b/pcap.c
+@@ -698,6 +698,59 @@ static const u_char charmap[] = {
+       (u_char)'\374', (u_char)'\375', (u_char)'\376', (u_char)'\377',
+ };
+ 
++/*
++ * Clean up a "struct bpf_program" by freeing all the memory allocated
++ * in it.
++ */
++void
++pcap_freecode(struct bpf_program *program)
++{
++      program->bf_len = 0;
++      if (program->bf_insns != NULL) {
++              free((char *)program->bf_insns);
++              program->bf_insns = NULL;
++      }
++}
++
++/*
++ * Make a copy of a BPF program and put it in the "fcode" member of
++ * a "pcap_t".
++ *
++ * If we fail to allocate memory for the copy, fill in the "errbuf"
++ * member of the "pcap_t" with an error message, and return -1;
++ * otherwise, return 0.
++ */
++int
++install_bpf_program(pcap_t *p, struct bpf_program *fp)
++{
++      size_t prog_size;
++
++      /*
++       * Validate the program.
++       */
++      if (!bpf_validate(fp->bf_insns, fp->bf_len)) {
++              snprintf(p->errbuf, sizeof(p->errbuf),
++                      "BPF program is not valid");
++              return (-1);
++      }
++
++      /*
++       * Free up any already installed program.
++       */
++      pcap_freecode(&p->fcode);
++
++      prog_size = sizeof(*fp->bf_insns) * fp->bf_len;
++      p->fcode.bf_len = fp->bf_len;
++      p->fcode.bf_insns = (struct bpf_insn *)malloc(prog_size);
++      if (p->fcode.bf_insns == NULL) {
++              snprintf(p->errbuf, sizeof(p->errbuf),
++                       "malloc: %s", pcap_strerror(errno));
++              return (-1);
++      }
++      memcpy(p->fcode.bf_insns, fp->bf_insns, prog_size);
++      return (0);
++}
++
+ int
+ pcap_strcasecmp(const char *s1, const char *s2)
+ {
+--- a/optimize.c
++++ b/optimize.c
+@@ -2278,45 +2278,6 @@ icode_to_fcode(root, lenp)
+       return fp;
+ }
+ 
+-/*
+- * Make a copy of a BPF program and put it in the "fcode" member of
+- * a "pcap_t".
+- *
+- * If we fail to allocate memory for the copy, fill in the "errbuf"
+- * member of the "pcap_t" with an error message, and return -1;
+- * otherwise, return 0.
+- */
+-int
+-install_bpf_program(pcap_t *p, struct bpf_program *fp)
+-{
+-      size_t prog_size;
+-
+-      /*
+-       * Validate the program.
+-       */
+-      if (!bpf_validate(fp->bf_insns, fp->bf_len)) {
+-              snprintf(p->errbuf, sizeof(p->errbuf),
+-                      "BPF program is not valid");
+-              return (-1);
+-      }
+-
+-      /*
+-       * Free up any already installed program.
+-       */
+-      pcap_freecode(&p->fcode);
+-
+-      prog_size = sizeof(*fp->bf_insns) * fp->bf_len;
+-      p->fcode.bf_len = fp->bf_len;
+-      p->fcode.bf_insns = (struct bpf_insn *)malloc(prog_size);
+-      if (p->fcode.bf_insns == NULL) {
+-              snprintf(p->errbuf, sizeof(p->errbuf),
+-                       "malloc: %s", pcap_strerror(errno));
+-              return (-1);
+-      }
+-      memcpy(p->fcode.bf_insns, fp->bf_insns, prog_size);
+-      return (0);
+-}
+-
+ #ifdef BDEBUG
+ static void
+ opt_dump(root)