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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/util/username.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/util/username.c')
-rw-r--r--src/util/username.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/util/username.c b/src/util/username.c
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+/*++
+/* NAME
+/* username 3
+/* SUMMARY
+/* lookup name of real user
+/* SYNOPSIS
+/* #include <username.h>
+/*
+/* const char *username()
+/* DESCRIPTION
+/* username() jumps whatever system-specific hoops it takes to
+/* get the name of the user who started the process. The result
+/* is volatile. Make a copy if it is to be used for an appreciable
+/* amount of time.
+/* 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 <unistd.h>
+#include <pwd.h>
+
+/* Utility library. */
+
+#include "username.h"
+
+/* username - get name of user */
+
+const char *username(void)
+{
+ uid_t uid;
+ struct passwd *pwd;
+
+ uid = getuid();
+ if ((pwd = getpwuid(uid)) == 0)
+ return (0);
+ return (pwd->pw_name);
+}