RFIO_PREAD(3) Rfio Library Functions RFIO_PREAD(3)NAME
rfio_pread - reads in a file
SYNOPSIS
#include <sys/types.h>
#include "rfio_api.h"
int rfio_pread (char *ptr, int size, int items, FILE *fd);
DESCRIPTION
rfio_pread reads items times size bytes, using the descriptor fd generated by a previous rfio_popen and strore them at location ptr.
RETURN VALUE
This routine returns -1 if the operation failed or the number of items actually read. In case of failure, serrno is set appropriately.
ERRORS
EBADF fd is a NULL pointer.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SETIMEDOUT Timed out.
SEBADVERSION Version ID mismatch.
SECONNDROP Connection closed by remote end.
SECOMERR Communication error.
SENORCODE Host did not return error number.
SEE ALSO rfio_popen(3)AUTHOR
LCG Grid Deployment Team
LCG $Date: 2008/09/24 11:25:01 $ RFIO_PREAD(3)
Check Out this Related Man Page
RFIO_POPEN(3) Rfio Library Functions RFIO_POPEN(3)NAME
rfio_popen, rfio_pclose - start a process and open a pipe to it
SYNOPSIS
#include <sys/types.h>
#include "rfio_api.h"
FILE *rfio_popen (const char *command, const char *type);
int rfio_pclose (FILE *fs);
DESCRIPTION
rfio_popen starts a process and opens a pipe to it.
command is a pointer to a string specifying the shell command to be executed.
type is a mode indicator for the pipe. One of the characters "r" or "w".
rfio_pclose waits for the forked process to terminate and returns the exit status of the command.
EXAMPLE
int c;
FILE *rf;
rf = rfio_popen (command, "r");
if (rf == NULL) {
rfio_perror ("rfio_popen");
exit (1);
}
while ((c = rfio_pread (buf, 1, sizeof(buf), rf)) > 0) {
...
}
c = rfio_pclose (rf);
RETURN VALUE
This routine returns NULL if the operation failed or a non-NULL pointer to a FILE structure if the operation was successful. If it fails,
serrno variable is set appropriately.
ERRORS
ENOMEM Not enough memory.
EINVAL The mode provided is invalid.
ECONNRESET Connection reset by peer
ETIMEDOUT Connection timed out
ECONNREFUSED Connection refused
EHOSTUNREACH No route to host
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SEUMSG2LONG Command string too long.
SECOMERR Communication error.
SEE ALSO rfio_pread(3), rfio_pwrite(3)AUTHOR
LCG Grid Deployment Team
LCG $Date: 2008/09/24 11:25:01 $ RFIO_POPEN(3)
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