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Language/OS - Multiplatform Resource Library
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LANGUAGE OS.iso
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lisp
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elk-2_0.lha
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elk-2.0
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src
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dump.c
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C/C++ Source or Header
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1992-10-21
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2KB
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92 lines
#include "scheme.h"
#ifdef CAN_DUMP
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
extern int errno;
Object Dump_Control_Point;
Init_Dump () {
Global_GC_Link (Dump_Control_Point);
}
#define Dump_Prolog \
Object ret;\
int ofd, afd;\
FILE *fp;\
char *ofn;\
Declare_C_Strings;\
GC_Node;\
\
if (!EQ (Curr_Input_Port, Standard_Input_Port) ||\
!EQ (Curr_Output_Port, Standard_Output_Port))\
Primitive_Error ("cannot dump with current ports redirected");\
Flush_Output (Curr_Output_Port);\
Close_All_Files ();\
\
GC_Link (ofile);\
ret = Internal_Call_CC (1, Null);\
if (Truep (ret))\
return ret;\
GC_Unlink;\
\
Disable_Interrupts;\
\
Make_C_String (ofile, ofn);\
if ((fp = fopen (ofn, "w+")) == 0) {\
Saved_Errno = errno;\
Primitive_Error ("cannot open ~s: ~E", ofile);\
}\
ofd = dup (fileno (fp));\
(void)fclose (fp);\
if (ofd == -1)\
Primitive_Error ("out of file descriptors");\
if ((afd = open (A_Out_Name, 0)) == -1) {\
Saved_Errno = errno;\
close (ofd);\
Primitive_Error ("cannot open a.out file: ~E");\
}
#define Dump_Finalize Saved_Errno = errno; close (afd); close (ofd)
#define Dump_Epilog {\
close (afd);\
Set_File_Executable (ofd, ofn);\
close (ofd);\
Enable_Interrupts;\
Dispose_C_Strings;\
return False;\
}
#ifdef ELF
# include "dump.elf.c"
#else
#ifdef ECOFF
# include "dump.ecoff.c"
#else
# include "dump.vanilla.c"
#endif
#endif
/*ARGSUSED1*/
Set_File_Executable (fd, fn) int fd; char *fn; {
struct stat st;
if (fstat (fd, &st) != -1) {
int omask = umask (0);
(void)umask (omask);
#ifdef FCHMOD_BROKEN
(void)chmod (fn, st.st_mode & 0777 | 0111 & ~omask);
#else
(void)fchmod (fd, st.st_mode & 0777 | 0111 & ~omask);
#endif
}
}
#endif /* CAN_DUMP */