Add support for Cygwin.

setter/src/win32/CMakeLists.txt

@@ -22,8 +22,8 @@
 # Copyright (C) 2011-2021 Natalia Portillo
 # *****************************************************************************/
 
-if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Windows")
+if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Windows" AND NOT CYGWIN)
     return()
 endif()
 
-add_sources(attr.c deleted.c dirdepth.c filename.c files.c frag.c links.c os.c perms.c rsrcfork.c sparse.c time.c volume.c xattr.c attr.h rsrcfork.h xattr.h links.h volume.h timew32.h os.h sparse.h)
+add_sources(attr.c deleted.c dirdepth.c filename.c files.c frag.c links.c os.c perms.c perms.h rsrcfork.c sparse.c time.c volume.c xattr.c attr.h rsrcfork.h xattr.h links.h volume.h timew32.h os.h sparse.h)

setter/src/win32/links.c

@@ -32,12 +32,16 @@ Copyright (C) 2011-2021 Natalia Portillo
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef __CYGWIN__
+#include <limits.h>
+#include <sys/cygwin.h>
+#include <sys/unistd.h>
+#endif // __CYGWIN__
+
 #include "win32.h"
-
-#include "links.h"
-
 #include "../include/defs.h"
 #include "../log.h"
+#include "links.h"
 
 extern DWORD oldVersion;
 
@@ -70,11 +74,14 @@ void Links(const char* path)
     else if(oldVersion == 0)
         verInfo.dwPlatformId = VER_PLATFORM_WIN32_NT;
 
+        // If we are not in Cygwin, do not proceed unless we are in Windows NT
+#if !defined(__CYGWIN__)
     if(verInfo.dwPlatformId != VER_PLATFORM_WIN32_NT)
     {
         // Not supported on Windows 9x
         return;
     }
+#endif // !__CYGWIN__
 
     lpRootPathName = malloc(dwMaxNameSize);
 
@@ -116,6 +123,17 @@ void Links(const char* path)
         return;
     }
 
+    // If we are not in Cygwin, call it, but do not proceed further unless we are in Windows NT
+#ifdef __CYGWIN__
+    CygwinLinks(path);
+
+    if(verInfo.dwPlatformId != VER_PLATFORM_WIN32_NT)
+    {
+        // Not supported on Windows 9x
+        return;
+    }
+#endif // __CYGWIN__
+
     kernel32 = LoadLibraryA("kernel32.dll");
 
     if(!kernel32)
@@ -209,3 +227,60 @@ void Links(const char* path)
 
     FreeLibrary(kernel32);
 }
+
+#ifdef __CYGWIN__
+void CygwinLinks(const char* path)
+{
+    char  cyg_path[PATH_MAX];
+    FILE* h;
+    int   ret;
+
+    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 = chdir("LINKS");
+
+    if(ret)
+    {
+        log_write("Error %d changing to working directory.\n", errno);
+        return;
+    }
+
+    log_write("Creating cygwin links.\n");
+
+    log_write("\tCreating cygwin target file.\n");
+
+    h = fopen("CYGTARGET", "w+");
+
+    if(h == NULL)
+    {
+        log_write("\tError %d creating cygwin target file.\n", errno);
+        return;
+    }
+
+    fprintf(h, "This is the target for the links.\n");
+
+    fclose(h);
+
+    log_write("\tCreating cygwin symbolic link.\n");
+
+    ret = link("CYGTARGET", "CYGHARD");
+
+    if(ret) log_write("\tError %d creating cygwin hard link.\n", errno);
+
+    log_write("\tCreating cygwin hard link.\n");
+
+    ret = symlink("CYGTARGET", "CYGSYMBOLIC");
+
+    if(ret) log_write("\tError %d creating cygwin symbolic link.\n", errno);
+}
+#endif // __CYGWIN__

setter/src/win32/links.h

@@ -27,6 +27,10 @@ Copyright (C) 2011-2021 Natalia Portillo
 
 #include "win32.h"
 
+#ifdef __CYGWIN__
+void CygwinLinks(const char* path);
+#endif // __CYGWIN__
+
 static BOOL(WINAPI* WinNtCreateHardLinkA)(LPCSTR, LPCSTR, LPSECURITY_ATTRIBUTES);
 static BOOL(WINAPI* WinNtCreateSymbolicLinkA)(LPCSTR, LPCSTR, DWORD);
 

setter/src/win32/os.c

@@ -31,12 +31,14 @@ Copyright (C) 2011-2021 Natalia Portillo
 #include <stdio.h>
 #include <string.h>
 
+#ifdef __CYGWIN__
+#include <sys/utsname.h>
+#endif
+
 #include "win32.h"
-
-#include "os.h"
-
 #include "../include/defs.h"
 #include "../log.h"
+#include "os.h"
 
 DWORD oldVersion;
 
@@ -47,6 +49,9 @@ void GetOsInfo()
     DWORD             error;
     void*             func;
     HINSTANCE         kernel32;
+#ifdef __CYGWIN__
+    struct utsname utsname;
+#endif
     kernel32 = LoadLibraryA("KERNEL32.DLL");
 
     memset(&verInfo, 0, sizeof(WIN_OSVERSIONINFO));
@@ -194,4 +199,11 @@ void GetOsInfo()
     }
 
     FreeLibrary(kernel32);
+
+#ifdef __CYGWIN__
+    memset(&utsname, 0, sizeof(struct utsname));
+    uname(&utsname);
+
+    printf("\tRunning under Cygwin release %s version %s.\n", utsname.release, utsname.version);
+#endif
 }

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
 }

setter/src/win32/perms.h

@@ -0,0 +1,55 @@
+/****************************************************************************
+Aaru Data Preservation Suite
+-----------------------------------------------------------------------------
+
+    Author(s)      : Natalia Portillo
+
+--[ License ] ---------------------------------------------------------------
+     This program is free software: you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as
+     published by the Free Software Foundation, either version 3 of the
+     License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+     GNU General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------------
+Copyright (C) 2011-2021 Natalia Portillo
+*****************************************************************************/
+
+#ifndef AARU_FSTESTER_SETTER_SRC_WIN32_PERMS_H_
+#define AARU_FSTESTER_SETTER_SRC_WIN32_PERMS_H_
+
+#ifdef __CYGWIN__
+typedef struct
+{
+    char   filename[256];
+    char   description[256];
+    mode_t mode;
+} cygwin_perms_tests_t;
+
+#define KNOWN_CYGWIN_PERMS 13
+
+static const cygwin_perms_tests_t cygwin_perms[KNOWN_CYGWIN_PERMS] = {
+    {"NONE", "File with no permissions", 0},
+    {"04000", "File with set-user-ID", 04000},
+    {"02000", "File with set-group-ID", 02000},
+    {"01000", "File with sticky bit", 01000},
+    {"00400", "File with read by owner", 00400},
+    {"00200", "File with write by owner", 00200},
+    {"00100", "File with execute by owner", 00100},
+    {"00040", "File with read by group", 00040},
+    {"00020", "File with write by group", 00020},
+    {"00010", "File with execute by group", 00010},
+    {"00004", "File with read by others", 00004},
+    {"00002", "File with write by others", 00002},
+    {"00001", "File with execute by others", 00001},
+};
+#endif
+
+#endif // AARU_FSTESTER_SETTER_SRC_WIN32_PERMS_H_