rfio_popen(3)

1RFIO_POPEN(3)               Rfio Library Functions               RFIO_POPEN(3)
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NAME

6       rfio_popen, rfio_pclose - start a process and open a pipe to it
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SYNOPSIS

9       #include <sys/types.h>
10       #include "rfio_api.h"
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12       FILE *rfio_popen (const char *command, const char *type);
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14       int rfio_pclose (FILE *fs);
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DESCRIPTION

17       rfio_popen starts a process and opens a pipe to it.
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19       command  is  a  pointer  to a string specifying the shell command to be
20       executed.
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22       type is a mode indicator for the pipe. One of  the  characters  "r"  or
23       "w".
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25       rfio_pclose  waits  for the forked process to terminate and returns the
26       exit status of the command.
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EXAMPLE

29            int c;
30            FILE *rf;
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32            rf = rfio_popen (command, "r");
33            if (rf == NULL) {
34                 rfio_perror ("rfio_popen");
35                 exit (1);
36            }
37            while ((c = rfio_pread (buf, 1, sizeof(buf), rf)) > 0) {
38                 ...
39            }
40            c = rfio_pclose (rf);
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RETURN VALUE

43       This routine returns NULL if the operation failed or a non-NULL pointer
44       to  a FILE structure if the operation was successful. If it fails, ser‐
45       rno variable is set appropriately.
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ERRORS

48       ENOMEM       Not enough memory.
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50       EINVAL       The mode provided is invalid.
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52       ECONNRESET   Connection reset by peer
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54       ETIMEDOUT    Connection timed out
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56       ECONNREFUSED Connection refused
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58       EHOSTUNREACH No route to host
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60       SENOSHOST    Host unknown.
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62       SENOSSERV    Service unknown.
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64       SEUMSG2LONG  Command string too long.
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66       SECOMERR     Communication error.
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AUTHOR

72       LCG Grid Deployment Team
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76LCG                      $Date: 2008/09/24 11:25:01 $            RFIO_POPEN(3)