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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "adio.h"
#include "ad_quobytefs.h"
#include "ad_quobytefs_internal.h"
void ADIOI_QUOBYTEFS_Open(ADIO_File fd, int *error_code)
{
ADIOI_QUOBYTEFS_CreateAdapter(fd->filename, error_code);
int perm, old_mask, amode;
static char myname[] = "ADIOI_QUOBYTEFS_OPEN";
/* shortest possible path "//A/B" */
if (strlen(fd->filename) < 5) {
*error_code = ADIOI_Err_create_code(myname, fd->filename, EINVAL);
return;
}
const char *filepath = ADIOI_QUOBYTEFSI_GetVolumeAndPath(fd->filename);
if (strlen(filepath) == 0) {
*error_code = ADIOI_Err_create_code(myname, fd->filename, EINVAL);
return;
}
if (fd->perm == ADIO_PERM_NULL) {
old_mask = umask(022);
umask(old_mask);
perm = old_mask ^ 0666;
} else
perm = fd->perm;
amode = 0;
if (fd->access_mode & ADIO_CREATE)
amode = amode | O_CREAT;
if (fd->access_mode & ADIO_RDONLY)
amode = amode | O_RDONLY;
if (fd->access_mode & ADIO_WRONLY)
amode = amode | O_WRONLY;
if (fd->access_mode & ADIO_RDWR)
amode = amode | O_RDWR;
if (fd->access_mode & ADIO_EXCL)
amode = amode | O_EXCL;
/* romio tests expect write then read without flush */
amode = amode | O_DIRECT;
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_open_a, 0, NULL);
#endif
fd->file_handle = quobyte_open(filepath, amode, perm);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_open_b, 0, NULL);
#endif
fd->fd_direct = -1;
if ((fd->file_handle != NULL) && (fd->access_mode & ADIO_APPEND)) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_lseek_a, 0, NULL);
#endif
struct stat file_stat;
if (quobyte_fstat(fd->file_handle, &file_stat)) {
*error_code = ADIOI_Err_create_code(myname, filepath, errno);
return;
}
fd->fp_ind = fd->fp_sys_posn = file_stat.st_size;
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_lseek_b, 0, NULL);
#endif
}
if (fd->file_handle == NULL) {
*error_code = ADIOI_Err_create_code(myname, filepath, errno);
} else {
*error_code = MPI_SUCCESS;
}
}
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