-/* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
Contributed by Andy Vaught
F2003 I/O support contributed by Jerry DeLisle
#include "io.h"
#include "fbuf.h"
#include "unix.h"
+
+#ifdef HAVE_UNISTD_H
#include <unistd.h>
+#endif
+
#include <string.h>
#include <errno.h>
#include <stdlib.h>
static void
test_endfile (gfc_unit * u)
{
- if (u->endfile == NO_ENDFILE && ssize (u->s) == stell (u->s))
- u->endfile = AT_ENDFILE;
+ if (u->endfile == NO_ENDFILE)
+ {
+ gfc_offset sz = ssize (u->s);
+ if (sz == 0 || sz == stell (u->s))
+ u->endfile = AT_ENDFILE;
+ }
}
u->flags.round = flags->round;
if (flags->sign != SIGN_UNSPECIFIED)
u->flags.sign = flags->sign;
- }
-
- /* Reposition the file if necessary. */
-
- switch (flags->position)
- {
- case POSITION_UNSPECIFIED:
- case POSITION_ASIS:
- break;
-
- case POSITION_REWIND:
- if (sseek (u->s, 0, SEEK_SET) != 0)
- goto seek_error;
-
- u->current_record = 0;
- u->last_record = 0;
-
- test_endfile (u);
- break;
-
- case POSITION_APPEND:
- if (sseek (u->s, 0, SEEK_END) < 0)
- goto seek_error;
-
- if (flags->access != ACCESS_STREAM)
- u->current_record = 0;
-
- u->endfile = AT_ENDFILE; /* We are at the end. */
- break;
- seek_error:
- generate_error (&opp->common, LIBERROR_OS, NULL);
- break;
+ /* Reposition the file if necessary. */
+
+ switch (flags->position)
+ {
+ case POSITION_UNSPECIFIED:
+ case POSITION_ASIS:
+ break;
+
+ case POSITION_REWIND:
+ if (sseek (u->s, 0, SEEK_SET) != 0)
+ goto seek_error;
+
+ u->current_record = 0;
+ u->last_record = 0;
+
+ test_endfile (u);
+ break;
+
+ case POSITION_APPEND:
+ if (sseek (u->s, 0, SEEK_END) < 0)
+ goto seek_error;
+
+ if (flags->access != ACCESS_STREAM)
+ u->current_record = 0;
+
+ u->endfile = AT_ENDFILE; /* We are at the end. */
+ break;
+
+ seek_error:
+ generate_error (&opp->common, LIBERROR_OS, NULL);
+ break;
+ }
}
unlock_unit (u);
/* Checks. */
- if (flags->delim == DELIM_UNSPECIFIED)
- flags->delim = DELIM_NONE;
- else
+ if (flags->delim != DELIM_UNSPECIFIED
+ && flags->form == FORM_UNFORMATTED)
{
- if (flags->form == FORM_UNFORMATTED)
- {
- generate_error (&opp->common, LIBERROR_OPTION_CONFLICT,
- "DELIM parameter conflicts with UNFORMATTED form in "
- "OPEN statement");
- goto fail;
- }
+ generate_error (&opp->common, LIBERROR_OPTION_CONFLICT,
+ "DELIM parameter conflicts with UNFORMATTED form in "
+ "OPEN statement");
+ goto fail;
}
if (flags->blank == BLANK_UNSPECIFIED)
s = open_external (opp, flags);
if (s == NULL)
{
- char *path, *msg;
- size_t msglen;
- path = (char *) gfc_alloca (opp->file_len + 1);
- msglen = opp->file_len + 51;
- msg = (char *) gfc_alloca (msglen);
- unpack_filename (path, opp->file, opp->file_len);
-
- switch (errno)
- {
- case ENOENT:
- snprintf (msg, msglen, "File '%s' does not exist", path);
- break;
-
- case EEXIST:
- snprintf (msg, msglen, "File '%s' already exists", path);
- break;
-
- case EACCES:
- snprintf (msg, msglen,
- "Permission denied trying to open file '%s'", path);
- break;
-
- case EISDIR:
- snprintf (msg, msglen, "'%s' is a directory", path);
- break;
-
- default:
- msg = NULL;
- }
-
+ char errbuf[256];
+ char *path = fc_strdup (opp->file, opp->file_len);
+ size_t msglen = opp->file_len + 22 + sizeof (errbuf);
+ char *msg = xmalloc (msglen);
+ snprintf (msg, msglen, "Cannot open file '%s': %s", path,
+ gf_strerror (errno, errbuf, sizeof (errbuf)));
generate_error (&opp->common, LIBERROR_OS, msg);
+ free (msg);
+ free (path);
goto cleanup;
}
/* Create the unit structure. */
- u->file = get_mem (opp->file_len);
if (u->unit_number != opp->common.unit)
internal_error (&opp->common, "Unit number changed");
u->s = s;
if (flags->position == POSITION_APPEND)
{
- if (file_size (opp->file, opp->file_len) > 0 && sseek (u->s, 0, SEEK_END) < 0)
- generate_error (&opp->common, LIBERROR_OS, NULL);
+ if (sseek (u->s, 0, SEEK_END) < 0)
+ {
+ generate_error (&opp->common, LIBERROR_OS, NULL);
+ goto cleanup;
+ }
u->endfile = AT_ENDFILE;
}
u->strm_pos = stell (u->s) + 1;
}
- memmove (u->file, opp->file, opp->file_len);
- u->file_len = opp->file_len;
+ u->filename = fc_strdup (opp->file, opp->file_len);
/* Curiously, the standard requires that the
position specifier be ignored for new files so a newly connected
if (!compare_file_filename (u, opp->file, opp->file_len))
{
-#if !HAVE_UNLINK_OPEN_FILE
- char *path = NULL;
- if (u->file && u->flags.status == STATUS_SCRATCH)
- {
- path = (char *) gfc_alloca (u->file_len + 1);
- unpack_filename (path, u->file, u->file_len);
- }
-#endif
-
if (sclose (u->s) == -1)
{
unlock_unit (u);
}
u->s = NULL;
- free (u->file);
- u->file = NULL;
- u->file_len = 0;
-
+
#if !HAVE_UNLINK_OPEN_FILE
- if (path != NULL)
- unlink (path);
+ if (u->filename && u->flags.status == STATUS_SCRATCH)
+ unlink (u->filename);
#endif
+ free (u->filename);
+ u->filename = NULL;
u = new_unit (opp, u, flags);
if (u != NULL)
flags.convert = conv;
- if (!(opp->common.flags & IOPARM_OPEN_HAS_NEWUNIT) && opp->common.unit < 0)
- generate_error (&opp->common, LIBERROR_BAD_OPTION,
- "Bad unit number in OPEN statement");
-
if (flags.position != POSITION_UNSPECIFIED
&& flags.access == ACCESS_DIRECT)
generate_error (&opp->common, LIBERROR_BAD_OPTION,
if ((opp->common.flags & IOPARM_LIBRETURN_MASK) == IOPARM_LIBRETURN_OK)
{
if ((opp->common.flags & IOPARM_OPEN_HAS_NEWUNIT))
+ opp->common.unit = get_unique_unit_number(opp);
+ else if (opp->common.unit < 0)
{
- *opp->newunit = get_unique_unit_number(opp);
- opp->common.unit = *opp->newunit;
+ u = find_unit (opp->common.unit);
+ if (u == NULL) /* Negative unit and no NEWUNIT-created unit found. */
+ {
+ generate_error (&opp->common, LIBERROR_BAD_OPTION,
+ "Bad unit number in OPEN statement");
+ library_end ();
+ return;
+ }
}
- u = find_or_create_unit (opp->common.unit);
+ if (u == NULL)
+ u = find_or_create_unit (opp->common.unit);
if (u->s == NULL)
{
u = new_unit (opp, u, &flags);
else
already_open (opp, u, &flags);
}
-
+
+ if ((opp->common.flags & IOPARM_OPEN_HAS_NEWUNIT)
+ && (opp->common.flags & IOPARM_LIBRETURN_MASK) == IOPARM_LIBRETURN_OK)
+ *opp->newunit = opp->common.unit;
+
library_end ();
}
projects / gcc.git / blobdiff