--- a/src/platform_unix.c Wed Aug 21 23:30:33 2013 -0400
+++ b/src/platform_unix.c Fri Aug 23 23:41:35 2013 -0400
@@ -13,6 +13,7 @@
#include <ctype.h>
#include <unistd.h>
+#include <stdlib.h>
#include <sys/types.h>
#include <pwd.h>
#include <sys/stat.h>
@@ -20,6 +21,7 @@
#include <dirent.h>
#include <time.h>
#include <errno.h>
+#include <limits.h>
#if PHYSFS_PLATFORM_LINUX && !defined(PHYSFS_HAVE_MNTENT_H)
#define PHYSFS_HAVE_MNTENT_H 1
@@ -244,20 +246,45 @@
char *retval = NULL;
const char *envr = NULL;
- /*
- * Try to avoid using argv0 unless forced to. If there's a Linux-like
- * /proc filesystem, you can get the full path to the current process from
- * the /proc/self/exe symlink.
+ /* Try to avoid using argv0 unless forced to. Try system-specific stuff. */
+
+ #if PHYSFS_PLATFORM_FREEBSD
+ {
+ char fullpath[PATH_MAX];
+ size_t buflen = sizeof (fullpath);
+ int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+ if (sysctl(mib, 4, fullpath, &buflen, NULL, 0) != -1)
+ retval = __PHYSFS_strdup(fullpath);
+ }
+ #elif PHYSFS_PLATFORM_SOLARIS
+ {
+ const char *path = getexecname();
+ if ((path != NULL) && (path[0] == '/')) /* must be absolute path... */
+ retval = __PHYSFS_strdup(path);
+ }
+ #endif
+
+ if (retval)
+ return retval; /* already got it. */
+
+ /* If there's a Linux-like /proc filesystem, you can get the full path to
+ * the current process from a symlink in there.
*/
- retval = readSymLink("/proc/self/exe");
- if (retval == NULL)
+
+ if (access("/proc", F_OK) == 0)
{
- /* older kernels don't have /proc/self ... try PID version... */
- const unsigned long long pid = (unsigned long long) getpid();
- char path[64];
- const int rc = (int) snprintf(path,sizeof(path),"/proc/%llu/exe",pid);
- if ( (rc > 0) && (rc < sizeof(path)) )
- retval = readSymLink(path);
+ retval = readSymLink("/proc/self/exe");
+ if (!retval) retval = readSymLink("/proc/curproc/file");
+ if (!retval) retval = readSymLink("/proc/curproc/exe");
+ if (retval == NULL)
+ {
+ /* older kernels don't have /proc/self ... try PID version... */
+ const unsigned long long pid = (unsigned long long) getpid();
+ char path[64];
+ const int rc = (int) snprintf(path,sizeof(path),"/proc/%llu/exe",pid);
+ if ( (rc > 0) && (rc < sizeof(path)) )
+ retval = readSymLink(path);
+ } /* if */
} /* if */
if (retval != NULL) /* chop off filename. */
@@ -272,7 +299,7 @@
} /* else */
} /* if */
- /* No /proc/self/exe, but we have an argv[0] we can parse? */
+ /* No /proc/self/exe, etc, but we have an argv[0] we can parse? */
if ((retval == NULL) && (argv0 != NULL))
{
/* fast path: default behaviour can handle this. */