Add support for Cygwin.

setter/src/win32/perms.c

@@ -25,8 +25,78 @@ Copyright (C) 2011-2021 Natalia Portillo
 // ReSharper disable CppJoinDeclarationAndAssignment
 // ReSharper disable CppDeprecatedEntity
 
+#ifdef __CYGWIN__
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/cygwin.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+
+#include "perms.h"
+#endif // __CYGWIN__
+
 #include "../include/defs.h"
+#include "../log.h"
 
 void FilePermissions(const char* path)
-{ /* Do nothing, not supported by target operating system */
+{
+    // Only supported by Cygwin, Windows uses normal attributes
+#ifdef __CYGWIN__
+    int   ret;
+    FILE* file;
+    int   rc;
+    int   cRc;
+    int   i;
+    char  cyg_path[PATH_MAX];
+
+    memset(cyg_path, 0, PATH_MAX);
+
+    cygwin_conv_path(CCP_WIN_A_TO_POSIX, path, cyg_path, PATH_MAX);
+
+    ret = chdir(cyg_path);
+
+    if(ret)
+    {
+        log_write("Error %d changing to specified path.\n", errno);
+        return;
+    }
+
+    ret = mkdir("PERMS", 0755);
+
+    if(ret)
+    {
+        log_write("Error %d creating working directory.\n", errno);
+        return;
+    }
+
+    ret = chdir("PERMS");
+
+    if(ret)
+    {
+        log_write("Error %d changing to working directory.\n", errno);
+        return;
+    }
+
+    log_write("Creating attributes files.\n");
+
+    for(i = 0; i < KNOWN_CYGWIN_PERMS; i++)
+    {
+        file = fopen(cygwin_perms[i].filename, "w+");
+        rc   = 0;
+        cRc  = 0;
+
+        if(!file) rc = errno;
+        else
+        {
+            fprintf(file, "%s.\n", cygwin_perms[i].description);
+            fclose(file);
+            cRc = chmod(cygwin_perms[i].filename, cygwin_perms[i].mode);
+        }
+
+        log_write(
+            "\t%s: name = \"%s\", rc = %d, cRc = %d\n", cygwin_perms[i].description, cygwin_perms[i].filename, rc, cRc);
+    }
+#endif
 }