[PATCH 2/8] loader: use sysctl instead of /proc/curproc/file on FreeBSD
Damjan Jovanovic
damjan.jov at gmail.com
Sat Oct 23 03:15:14 CDT 2021
Signed-off-by: Damjan Jovanovic <damjan.jov at gmail.com>
---
loader/main.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
-------------- next part --------------
diff --git a/loader/main.c b/loader/main.c
index fdc77c56162..242ff15accd 100644
--- a/loader/main.c
+++ b/loader/main.c
@@ -29,6 +29,10 @@
#include <sys/stat.h>
#include <unistd.h>
#include <dlfcn.h>
+#include <limits.h>
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
#include "main.h"
@@ -83,8 +87,14 @@ static const char *get_self_exe( char *argv0 )
#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
return "/proc/self/exe";
#elif defined (__FreeBSD__) || defined(__DragonFly__)
- return "/proc/curproc/file";
-#else
+ static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+ size_t path_size = PATH_MAX;
+ char *path = malloc( path_size );
+ if (path && !sysctl( pathname, sizeof(pathname)/sizeof(pathname[0]), path, &path_size, NULL, 0 ))
+ return path;
+ free( path );
+#endif
+
if (!strchr( argv0, '/' )) /* search in PATH */
{
char *p, *path = getenv( "PATH" );
@@ -104,7 +114,6 @@ static const char *get_self_exe( char *argv0 )
return NULL;
}
return argv0;
-#endif
}
static void *try_dlopen( const char *dir, const char *name )
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