File libjpeg-ocloexec.patch of Package libjpeg-turbo

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File libjpeg-ocloexec.patch of Package libjpeg-turbo (Revision 389db22930063dc4e95745acb28fc3a0)

Currently displaying revision 389db22930063dc4e95745acb28fc3a0 , 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
@@ -35,15 +35,15 @@ extern void * malloc ();
 #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
 #ifdef VMS			/* VMS is very nonstandard */
 #define READ_BINARY	"rb", "ctx=stm"
 #define WRITE_BINARY	"wb", "ctx=stm"
 #else				/* standard ANSI-compliant case */
-#define READ_BINARY	"rb"
-#define WRITE_BINARY	"wb"
+#define READ_BINARY	"rbe"
+#define WRITE_BINARY	"wbe"
 #endif
 #endif
 
@@ -439,7 +439,7 @@ main (int argc, char **argv)
       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
@@ -156,15 +156,15 @@ EXTERN(FILE *) write_stdout JPP((void));
 /* 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
 #ifdef VMS			/* VMS is very nonstandard */
 #define READ_BINARY	"rb", "ctx=stm"
 #define WRITE_BINARY	"wb", "ctx=stm"
 #else				/* standard ANSI-compliant case */
-#define READ_BINARY	"rb"
-#define WRITE_BINARY	"wb"
+#define READ_BINARY	"rbe"
+#define WRITE_BINARY	"wbe"
 #endif
 #endif
 
--- rdswitch.c.orig
+++ rdswitch.c
@@ -92,7 +92,7 @@ read_quant_tables (j_compress_ptr cinfo,
   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;
   }
@@ -190,7 +190,7 @@ read_scan_script (j_compress_ptr cinfo,
 #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
@@ -257,7 +257,7 @@ int saveppm(char *filename, unsigned cha
 	FILE *fs=NULL;  int retcode=0;
 	unsigned char *tempbuf=NULL;
 
-	if((fs=fopen(filename, "wb"))==NULL) _throw(strerror(errno));
+	if((fs=fopen(filename, "wbe"))==NULL) _throw(strerror(errno));
 	if(fprintf(fs, "P6\n")<1) _throw("Write error");
 	if(fprintf(fs, "%d %d\n", w, h)<1) _throw("Write error");
 	if(fprintf(fs, "255\n")<1) _throw("Write error");

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File libjpeg-ocloexec.patch of Package libjpeg-turbo (Revision 389db22930063dc4e95745acb28fc3a0)

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