Set or get the hostname of the machine the current process is running
on.
+** New function: mkstemp! tmpl
+mkstemp creates a new unique file in the file system and returns a
+new buffered port open for reading and writing to the file. TMPL
+is a string specifying where the file should be created: it must
+end with `XXXXXX' and will be changed in place to return the name
+of the temporary file.
+
** New function: open-input-string string
Return an input string port which delivers the characters from
2001-03-18 Gary Houston <ghouston@arglist.com>
+ * posix.c (scm_tmpnam): check that return value from tmpnam is not
+ NULL. rewrote the docstring.
+ (scm_mkstemp): new procedure implementing "mkstemp!".
+ * posix.h: declare scm_mkstemp.
+
* net_db.c: declare h_errno if configure didn't define HAVE_H_ERRNO.
normally it would be found in netdb.h.
SCM_DEFINE (scm_tmpnam, "tmpnam", 0, 0, 0,
(),
- "Create a new file in the file system with a unique name. The return\n"
- "value is the name of the new file. This function is implemented with\n"
- "the @code{tmpnam} function in the system libraries.")
+ "tmpnam returns a name in the file system that does not match\n"
+ "any existing file. However there is no guarantee that\n"
+ "another process will not create the file after tmpnam\n"
+ "is called. Care should be taken if opening the file,\n"
+ "e.g., use the O_EXCL open flag or use @code{mkstemp!} instead.")
#define FUNC_NAME s_scm_tmpnam
{
char name[L_tmpnam];
- SCM_SYSCALL (tmpnam (name););
+ char *rv;
+
+ SCM_SYSCALL (rv = tmpnam (name));
+ if (rv == NULL)
+ /* not SCM_SYSERROR since errno probably not set. */
+ SCM_MISC_ERROR ("tmpnam failed", SCM_EOL);
return scm_makfrom0str (name);
}
#undef FUNC_NAME
#endif
+SCM_DEFINE (scm_mkstemp, "mkstemp!", 1, 0, 0,
+ (SCM tmpl),
+ "mkstemp creates a new unique file in the file system and\n"
+ "returns a new buffered port open for reading and writing to\n"
+ "the file. @var{tmpl} is a string specifying where the\n"
+ "file should be created: it must end with @code{XXXXXX}\n"
+ "and will be changed in place to return the name of the\n"
+ "temporary file.\n")
+#define FUNC_NAME s_scm_mkstemp
+{
+ char *c_tmpl;
+ int rv;
+
+ SCM_STRING_COERCE_0TERMINATION_X (tmpl);
+ SCM_VALIDATE_STRING_COPY (1, tmpl, c_tmpl);
+ SCM_SYSCALL (rv = mkstemp (c_tmpl));
+ if (rv == -1)
+ SCM_SYSERROR;
+ return scm_fdes_to_port (rv, "w+", tmpl);
+}
+#undef FUNC_NAME
+
SCM_DEFINE (scm_utime, "utime", 1, 2, 0,
(SCM pathname, SCM actime, SCM modtime),
"@code{utime} sets the access and modification times for\n"
#ifndef POSIXH
#define POSIXH
-/* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
extern SCM scm_uname (void);
extern SCM scm_environ (SCM env);
extern SCM scm_tmpnam (void);
+extern SCM scm_mkstemp (SCM tmpl);
extern SCM scm_open_pipe (SCM pipestr, SCM modes);
extern SCM scm_close_pipe (SCM port);
extern SCM scm_utime (SCM pathname, SCM actime, SCM modtime);