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/*++
/* NAME
/* mail_scan_dir 3
/* SUMMARY
/* mail queue directory scanning support
/* SYNOPSIS
/* #include <mail_scan_dir.h>
/*
/* char *mail_scan_dir_next(scan)
/* SCAN_DIR *scan;
/* DESCRIPTION
/* The \fBmail_scan_dir_next\fR() routine is a wrapper around
/* scan_dir_next() that understands the structure of a Postfix
/* mail queue. The result is a queue ID or a null pointer.
/* SEE ALSO
/* scan_dir(3) directory scanner
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <string.h>
/* Utility library. */
#include <scan_dir.h>
/* Global library. */
#include <mail_scan_dir.h>
/* mail_scan_dir_next - return next queue file */
char *mail_scan_dir_next(SCAN_DIR *scan)
{
char *name;
/*
* Exploit the fact that mail queue subdirectories have one-letter names,
* so we don't have to stat() every file in sight. This is a win because
* many dirent implementations do not return file type information.
*/
for (;;) {
if ((name = scan_dir_next(scan)) == 0) {
if (scan_dir_pop(scan) == 0)
return (0);
} else if (strlen(name) == 1) {
scan_dir_push(scan, name);
} else {
return (name);
}
}
}
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