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cell-binutils  2.17cvs20070401
Classes | Defines | Functions
pex-msdos.c File Reference
#include "pex-common.h"
#include <stdio.h>
#include <errno.h>
#include "safe-ctype.h"
#include <process.h>

Go to the source code of this file.

Classes

struct  pex_msdos

Defines

#define PEX_MSDOS_FILE_COUNT   3
#define PEX_MSDOS_FD_OFFSET   10

Functions

static int pex_msdos_open (struct pex_obj *, const char *, int)
static int pex_msdos_fdindex (struct pex_msdos *, int)
static long pex_msdos_exec_child (struct pex_obj *, int, const char *, char *const *, char *const *, int, int, int, int, int, const char **, int *)
static int pex_msdos_close (struct pex_obj *, int)
static int pex_msdos_wait (struct pex_obj *, long, int *, struct pex_time *, int, const char **, int *)
static void pex_msdos_cleanup (struct pex_obj *)
struct pex_objpex_init (int flags, const char *pname, const char *tempbase)
static int pex_msdos_open (struct pex_obj *obj, const char *name, int binary ATTRIBUTE_UNUSED)
static long pex_msdos_exec_child (struct pex_obj *obj, int flags, const char *executable, char *const *argv, char *const *env, int in, int out, int toclose ATTRIBUTE_UNUSED, int errdes ATTRIBUTE_UNUSED, const char **errmsg, int *err)
static int pex_msdos_wait (struct pex_obj *obj, long pid, int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED, const char **errmsg ATTRIBUTE_UNUSED, int *err ATTRIBUTE_UNUSED)

Class Documentation

struct pex_msdos

Definition at line 45 of file pex-msdos.c.

Class Members
const char * files
int * statuses

Define Documentation

#define PEX_MSDOS_FD_OFFSET   10

Definition at line 43 of file pex-msdos.c.

#define PEX_MSDOS_FILE_COUNT   3

Definition at line 41 of file pex-msdos.c.


Function Documentation

struct pex_obj* pex_init ( int  flags,
const char *  pname,
const char *  tempbase 
) [read]

Definition at line 84 of file pex-msdos.c.

{
  struct pex_obj *ret;
  int i;

  /* MSDOS does not support pipes.  */
  flags &= ~ PEX_USE_PIPES;

  ret = pex_init_common (flags, pname, tempbase, funcs);

  ret->sysdep = XNEW (struct pex_msdos);
  for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i)
    ret->files[i] = NULL;
  ret->statuses = NULL;

  return ret;
}

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static void pex_msdos_cleanup ( struct pex_obj obj) [static]

Definition at line 306 of file pex-msdos.c.

{
  struct pex_msdos *ms;
  int i;

  ms = (struct pex_msdos *) obj->sysdep;
  for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i)
    if (msdos->files[i] != NULL)
      free (msdos->files[i]);
  if (msdos->statuses != NULL)
    free (msdos->statuses);
  free (msdos);
  obj->sysdep = NULL;
}

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static int pex_msdos_close ( struct pex_obj obj,
int  fd 
) [static]

Definition at line 142 of file pex-msdos.c.

{
  struct pex_msdos *ms;
  int fdinex;

  ms = (struct pex_msdos *) obj->sysdep;
  fdindex = pe_msdos_fdindex (ms, fd);
  free (ms->files[fdindex]);
  ms->files[fdindex] = NULL;
}

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static long pex_msdos_exec_child ( struct pex_obj ,
int  ,
const char *  ,
char *const ,
char *const ,
int  ,
int  ,
int  ,
int  ,
int  ,
const char **  ,
int  
) [static]
static long pex_msdos_exec_child ( struct pex_obj obj,
int  flags,
const char *  executable,
char *const argv,
char *const env,
int  in,
int  out,
int toclose  ATTRIBUTE_UNUSED,
int errdes  ATTRIBUTE_UNUSED,
const char **  errmsg,
int err 
) [static]

Definition at line 156 of file pex-msdos.c.

{
  struct pex_msdos *ms;
  char *temp_base;
  int temp_base_allocated;
  char *rf;
  int inindex;
  char *infile;
  int outindex;
  char *outfile;
  char *scmd;
  FILE *argfile;
  int i;
  int status;

  ms = (struct pex_msdos *) obj->sysdep;

  /* FIXME: I don't know how to redirect stderr, so we ignore ERRDES
     and PEX_STDERR_TO_STDOUT.  */

  temp_base = obj->temp_base;
  if (temp_base != NULL)
    temp_base_allocated = 0;
  else
    {
      temp_base = choose_temp_base ();
      temp_base_allocated = 1;
    }

  rf = concat (temp_base, ".gp", NULL);

  if (temp_base_allocated)
    free (temp_base);

  if (in == STDIN_FILE_NO)
    {
      inindex = -1;
      infile = "";
    }
  else
    {
      inindex = pex_msdos_fdindex (ms, in);
      infile = ms->files[inindex];
    }

  if (out == STDOUT_FILE_NO)
    {
      outindex = -1;
      outfile = "";
    }
  else
    {
      outindex = pex_msdos_fdindex (ms, out);
      outfile = ms->files[outindex];
    }

  scmd = XNEWVEC (char, strlen (program)
                + ((flags & PEXECUTE_SEARCH) != 0 ? 4 : 0)
                + strlen (rf)
                + strlen (infile)
                + strlen (outfile)
                + 10);
  sprintf (scmd, "%s%s @%s%s%s%s%s",
          program,
          (flags & PEXECUTE_SEARCH) != 0 ? ".exe" : "",
          rf,
          inindex != -1 ? " <" : "",
          infile,
          outindex != -1 ? " >" : "",
          outfile);

  argfile = fopen (rf, "w");
  if (argfile == NULL)
    {
      *err = errno;
      free (scmd);
      free (rf);
      *errmsg = "cannot open temporary command file";
      return -1;
    }

  for (i = 1; argv[i] != NULL; ++i)
    {
      char *p;

      for (p = argv[i]; *p != '\0'; ++p)
       {
         if (*p == '"' || *p == '\'' || *p == '\\' || ISSPACE (*p))
           putc ('\\', argfile);
         putc (*p, argfile);
       }
      putc ('\n', argfile);
    }

  fclose (argfile);

  status = system (scmd);

  if (status == -1)
    {
      *err = errno;
      remove (rf);
      free (scmd);
      free (rf);
      *errmsg = "system";
      return -1;
    }

  remove (rf);
  free (scmd);
  free (rf);

  /* Save the exit status for later.  When we are called, obj->count
     is the number of children which have executed before this
     one.  */
  ms->statuses = XRESIZEVEC(int, ms->statuses, obj->count + 1);
  ms->statuses[obj->count] = status;

  return obj->count;
}

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static int pex_msdos_fdindex ( struct pex_msdos ms,
int  fd 
) [static]

Definition at line 130 of file pex-msdos.c.

{
  fd -= PEX_MSDOS_FD_OFFSET;
  if (fd < 0 || fd >= PEX_MSDOS_FILE_COUNT || ms->files[fd] == NULL)
    abort ();
  return fd;
}

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static int pex_msdos_open ( struct pex_obj ,
const char *  ,
int   
) [static]
static int pex_msdos_open ( struct pex_obj obj,
const char *  name,
int binary  ATTRIBUTE_UNUSED 
) [static]

Definition at line 106 of file pex-msdos.c.

{
  struct pex_msdos *ms;
  int i;

  ms = (struct pex_msdos *) obj->sysdep;

  for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i)
    {
      if (ms->files[i] == NULL)
       {
         ms->files[i] = xstrdup (name);
         return i + PEX_MSDOS_FD_OFFSET;
       }
    }

  abort ();
}

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static int pex_msdos_wait ( struct pex_obj ,
long  ,
int ,
struct pex_time ,
int  ,
const char **  ,
int  
) [static]
static int pex_msdos_wait ( struct pex_obj obj,
long  pid,
int status,
struct pex_time time,
int done  ATTRIBUTE_UNUSED,
const char **errmsg  ATTRIBUTE_UNUSED,
int *err  ATTRIBUTE_UNUSED 
) [static]

Definition at line 286 of file pex-msdos.c.

{
  struct pex_msdos *ms;

  ms = (struct pex_msdos *) obj->sysdep;

  if (time != NULL)
    memset (time, 0, sizeof *time);

  *status = ms->statuses[pid];

  return 0;
}

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