Merge pull request #1423 from PR9000/fix/freebsd-cli-self-path

fix(cli): add native FreeBSD self-executable path resolution

Author: DeusData

src/cli/cli.c

@@ -106,6 +106,10 @@ static int cbm_powershell_quote_word(const char *value, char *out, size_t out_si
 #include <stdlib.h>
 #include <string.h>   // strtok_r
 #include <sys/stat.h> // mode_t, S_IXUSR
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
 #include <time.h>
 #include <wchar.h>
 #include <zlib.h> // MAX_WBITS
@@ -9206,6 +9210,13 @@ static bool cbm_detect_self_path(char *buf, size_t buf_sz, const char *home) {
     if (!exact) {
         buf[0] = '\0';
     }
+#elif defined(__FreeBSD__)
+    int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
+    size_t cb = buf_sz;
+    exact = sysctl(mib, 4, buf, &cb, NULL, 0) == 0 && cb > 0;
+    if (!exact) {
+        buf[0] = '\0';
+    }
 #else
     ssize_t sp_len = readlink("/proc/self/exe", buf, buf_sz - SKIP_ONE);
     exact = sp_len > 0 && (size_t)sp_len < buf_sz - SKIP_ONE;