vendor/tzcode/tzcode2025c

1 files changed, 16 insertions, 2 deletions

diff --git a/newtzset.3 b/newtzset.3
index db6bfa7fa64c..028cfd2563e3 100644
--- a/newtzset.3
+++ b/newtzset.3
@@ -13,7 +13,7 @@ tzset \- initialize time conversion information
 .PP
 .B void tzset(void);
 .PP
-/\(** Optional and obsolescent:  \(**/
+/* Optional and obsolescent:  */
 .br
 .B extern char *tzname[];
 .br
@@ -78,7 +78,17 @@ contents are used as a pathname, a pathname beginning with
 is used as-is; otherwise
 the pathname is relative to a system time conversion information
 directory.
-The file must be in the format specified in
+In a privileged program the pathname must be relative.
+Relative pathnames must not contain
+.q "..\&"
+components.
+For the purpose of these checks, a file name beginning with
+.q "/"
+is considered to be relative if it is the
+.B localtime
+file's name, or if it starts with the
+system timezone directory's name followed by one more more slashes.
+The file must be a regular file in the format specified in
 .BR tzfile (5).
 .PP
 When
@@ -369,6 +379,10 @@ If successful, the
 function returns a nonnull pointer to the newly allocated object.
 Otherwise, it returns a null pointer and sets
 .IR errno .
+The
+.B tzfree
+function does not modify
+.IR errno .
 .SH ERRORS
 .TP
 .B EOVERFLOW