support bsds

php_micro_fileinfo.c

@@ -27,11 +27,13 @@ limitations under the License.
 #if defined(PHP_WIN32)
 # include "win32/codepage.h"
 # include <windows.h>
-#elif defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
-// all the things linux used should also work for other unix-like using ELF,
-// but not well tested
+#elif defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
 # include <elf.h>
-# include <sys/auxv.h>
+# if defined(__linux) || defined(__FreeBSD__)
+# include <sys/auxv.h> // for getauxval / elf_aux_info
+# else
+# include <sys/sysctl.h> // for sysctl
+# endif // defined(__linux) || defined(__FreeBSD__)
 # if defined(__LP64__)
 typedef Elf64_Ehdr Elf_Ehdr;
 typedef Elf64_Shdr Elf_Shdr;
@@ -428,7 +430,7 @@ int _micro_init_sfxsize(void) {
  dbgprintf("using __DATA,__micro_sfxsize section: %zd, %zd\n", _final_sfxsize, _sfxsize_limit);
 
  return SUCCESS;
-#elif defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#elif defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
  // get section header
  Elf_Ehdr ehdr;
  Elf_Shdr *shdrs = NULL, *shdr, *strtabhdr;
@@ -682,7 +684,8 @@ const char *micro_get_filename(void) {
  return self_filename;
 }
 
-#elif defined(__linux) || defined(__NetBSD__) || defined(__OpenBSD__)
+#elif defined(__linux)
+// use getauxval AT_EXECFN
 const char *micro_get_filename(void) {
  static char *self_filename = NULL;
  if (NULL == self_filename) {
@@ -692,6 +695,7 @@ const char *micro_get_filename(void) {
  return self_filename;
 }
 #elif defined(__FreeBSD__)
+// use elf_aux_info AT_EXECPATH
 const char *micro_get_filename(void) {
  static char *self_filename = NULL;
  char filename[PATH_MAX];
@@ -704,6 +708,66 @@ const char *micro_get_filename(void) {
  }
  return self_filename;
 }
+#elif defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+// use sysctl
+const char *micro_get_filename(void) {
+ static char *self_filename = NULL;
+ int mib[4];
+ size_t len;
+ char *buf;
+ if (NULL == self_filename) {
+ self_filename = malloc(PATH_MAX);
+# if defined(__NetBSD__) && defined(KERN_PROC_PATHNAME)
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC_ARGS;
+ mib[2] = getpid();
+ mib[3] = KERN_PROC_PATHNAME;
+# elif defined(__DragonFly__)
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC;
+ mib[2] = KERN_PROC_PATHNAME;
+ mib[3] = -1;
+# else // openbsd or netbsd without KERN_PROC_PATHNAME
+ // fall back to argv[0], this is fragile
+ // if
+ // - argv is changed
+ // - parent sets argv[0] to another value
+ // - called in $PATH
+ // there will be a wrong value
+ // so if you understand this limit, comment the following line
+# error "not support this system yet"
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC_ARGS;
+ mib[2] = getpid();
+ mib[3] = KERN_PROC_ARGV;
+# endif
+
+ if (sysctl(mib, 4, NULL, &len, NULL, 0) != 0) {
+ return NULL;
+ }
+
+ buf = malloc(len);
+ if (NULL == buf) {
+ // impossible
+ return NULL;
+ }
+
+ if (sysctl(mib, 4, buf, &len, NULL, 0) != 0) {
+ free(buf);
+ return NULL;
+ }
+
+# if (defined(__NetBSD__) && defined(KERN_PROC_PATHNAME)) || defined(__DragonFly__)
+ (void)realpath(buf, self_filename);
+# elif defined(__OpenBSD__)
+ (void)realpath(((char **)buf)[0], self_filename);
+# else
+# error "not support this system yet"
+# endif
+ free(buf);
+ }
+ return self_filename;
+}
 #elif defined(__APPLE__)
 const char *micro_get_filename(void) {
  static char *self_path = NULL;