/*++ /* 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); } } }