File libjpeg-1.4.0-ocloexec.patch of Package mingw32-libjpeg-turbo

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File libjpeg-1.4.0-ocloexec.patch of Package mingw32-libjpeg-turbo (Revision 394b0068b6b6c8b227f837f187a7a06c)

Currently displaying revision 394b0068b6b6c8b227f837f187a7a06c , Show latest

This patch causes libjpeg to open all files with O_CLOEXEC
the "e" fopen mode is a glibc/linux specific feature hence
not suitable for other OS.

Note that it is NOT HANDLED GRACEFULLY on kernels older than 
2.6.23 or glibc < 2.7.x and WILL segfault.

The other alternative, using fcntl with FD_CLOEXEC is NOT
enough to prevent race conditions.

--- wrjpgcom.c.orig
+++ wrjpgcom.c
@@ -37,11 +37,11 @@
 #endif
 
 #ifdef DONT_USE_B_MODE          /* define mode parameters for fopen() */
-#define READ_BINARY     "r"
-#define WRITE_BINARY    "w"
+#define READ_BINARY     "re"
+#define WRITE_BINARY    "we"
 #else
-#define READ_BINARY     "rb"
-#define WRITE_BINARY    "wb"
+#define READ_BINARY     "rbe"
+#define WRITE_BINARY    "wbe"
 #endif
 
 #ifndef EXIT_FAILURE            /* define exit() codes if not provided */
@@ -432,7 +432,7 @@
       keep_COM = 0;
     } else if (keymatch(arg, "cfile", 2)) {
       if (++argn >= argc) usage();
-      if ((comment_file = fopen(argv[argn], "r")) == NULL) {
+      if ((comment_file = fopen(argv[argn], READ_BINARY)) == NULL) {
         fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
         exit(EXIT_FAILURE);
       }
--- cdjpeg.h.orig
+++ cdjpeg.h
@@ -126,11 +126,11 @@
 /* miscellaneous useful macros */
 
 #ifdef DONT_USE_B_MODE          /* define mode parameters for fopen() */
-#define READ_BINARY     "r"
-#define WRITE_BINARY    "w"
+#define READ_BINARY     "re"
+#define WRITE_BINARY    "we"
 #else
-#define READ_BINARY     "rb"
-#define WRITE_BINARY    "wb"
+#define READ_BINARY     "rbe"
+#define WRITE_BINARY    "wbe"
 #endif
 
 #ifndef EXIT_FAILURE            /* define exit() codes if not provided */
 
--- rdswitch.c.orig
+++ rdswitch.c
@@ -93,7 +93,7 @@
   long val;
   unsigned int table[DCTSIZE2];
 
-  if ((fp = fopen(filename, "r")) == NULL) {
+  if ((fp = fopen(filename, READ_BINARY)) == NULL) {
     fprintf(stderr, "Can't open table file %s\n", filename);
     return FALSE;
   }
@@ -191,7 +191,7 @@
 #define MAX_SCANS  100          /* quite arbitrary limit */
   jpeg_scan_info scans[MAX_SCANS];
 
-  if ((fp = fopen(filename, "r")) == NULL) {
+ if ((fp = fopen(filename, READ_BINARY)) == NULL) {
     fprintf(stderr, "Can't open scan definition file %s\n", filename);
     return FALSE;
   }
--- bmp.c.orig
+++ bmp.c
@@ -112,7 +112,7 @@ int loadbmp(char *filename, unsigned cha
 	if(!filename || !buf || !w || !h || dstpf<0 || dstpf>=TJ_NUMPF)
 		_throw("loadbmp(): Invalid argument");
 
-	if((file=fopen(filename, "rb"))==NULL)
+	if((file=fopen(filename, READ_BINARY))==NULL)
 		_throwunix("loadbmp(): Cannot open input file");
 
 	cinfo.err=jpeg_std_error(&jerr.pub);
@@ -196,7 +196,7 @@ int savebmp(char *filename, unsigned cha
 	if(!filename || !buf || w<1 || h<1 || srcpf<0 || srcpf>=TJ_NUMPF)
 		_throw("savebmp(): Invalid argument");
 
-	if((file=fopen(filename, "wb"))==NULL)
+	if((file=fopen(filename, WRITE_BINARY))==NULL)
 		_throwunix("savebmp(): Cannot open output file");
 
 	dinfo.err=jpeg_std_error(&jerr.pub);

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File libjpeg-1.4.0-ocloexec.patch of Package mingw32-libjpeg-turbo (Revision 394b0068b6b6c8b227f837f187a7a06c)

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