diff options
Diffstat (limited to 'man3/ttyslot.3')
| -rw-r--r-- | man3/ttyslot.3 | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/man3/ttyslot.3 b/man3/ttyslot.3 index d50af49..f4eaa7f 100644 --- a/man3/ttyslot.3 +++ b/man3/ttyslot.3 @@ -6,7 +6,7 @@ .\" This replaces an earlier man page written by Walter Harms .\" <walter.harms@informatik.uni-oldenburg.de>. .\" -.TH ttyslot 3 2023-07-20 "Linux man-pages 6.05.01" +.TH ttyslot 3 2023-10-31 "Linux man-pages 6.7" .SH NAME ttyslot \- find the slot of the current user's terminal in some file .SH LIBRARY @@ -15,15 +15,15 @@ Standard C library .SH SYNOPSIS .nf .BR "#include <unistd.h>" " /* See NOTES */" -.PP +.P .B "int ttyslot(void);" .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR ttyslot (): .nf Since glibc 2.24: @@ -37,7 +37,7 @@ Feature Test Macro Requirements for glibc (see The legacy function .BR ttyslot () returns the index of the current user's entry in some file. -.PP +.P Now "What file?" you ask. Well, let's first look at some history. .SS Ancient history @@ -57,7 +57,7 @@ indicating the sequence of line speeds to try (\[aq]\-\[aq] was: start trying Thus a typical line was "18\-". A hang on some line was solved by changing the \[aq]1\[aq] to a \[aq]0\[aq], signaling init, changing back again, and signaling init again. -.PP +.P In UNIX\ V7 the format was changed: here the second character was the argument to .BR getty (8) @@ -65,7 +65,7 @@ indicating the sequence of line speeds to try (\[aq]0\[aq] was: cycle through 300-1200-150-110 baud; \[aq]4\[aq] was for the on-line console DECwriter) while the rest of the line contained the name of the tty. Thus a typical line was "14console". -.PP +.P Later systems have more elaborate syntax. System V-like systems have .I /etc/inittab @@ -119,7 +119,6 @@ T{ .BR ttyslot () T} Thread safety MT-Unsafe .TE -.sp 1 .SH VERSIONS The utmp file is found in various places on various systems, such as .IR /etc/utmp , @@ -130,7 +129,7 @@ None. .SH HISTORY SUSv1; marked as LEGACY in SUSv2; removed in POSIX.1-2001. SUSv2 requires \-1 on error. -.PP +.P The glibc2 implementation of this function reads the file .BR _PATH_TTYS , defined in @@ -139,7 +138,7 @@ as "/etc/ttys". It returns 0 on error. Since Linux systems do not usually have "/etc/ttys", it will always return 0. -.PP +.P On BSD-like systems and Linux, the declaration of .BR ttyslot () is provided by @@ -150,7 +149,7 @@ Since glibc 2.24, .I <stdlib.h> also provides the declaration with the following feature test macro definitions: -.PP +.P .in +4n .EX (_XOPEN_SOURCE >= 500 || @@ -158,7 +157,7 @@ feature test macro definitions: && ! (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) .EE .in -.PP +.P Minix also has .IR fttyslot ( fd ). .\" .SH HISTORY |