diff options
Diffstat (limited to 'man3/sysconf.3')
| -rw-r--r-- | man3/sysconf.3 | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/man3/sysconf.3 b/man3/sysconf.3 index a4d14d3..29ce6bd 100644 --- a/man3/sysconf.3 +++ b/man3/sysconf.3 @@ -5,7 +5,7 @@ .\" .\" Modified Sat Jul 24 17:51:42 1993 by Rik Faith (faith@cs.unc.edu) .\" Modified Tue Aug 17 11:42:20 1999 by Ariel Scolnicov (ariels@compugen.co.il) -.TH sysconf 3 2023-07-20 "Linux man-pages 6.05.01" +.TH sysconf 3 2023-10-31 "Linux man-pages 6.7" .SH NAME sysconf \- get configuration information at run time .SH LIBRARY @@ -14,20 +14,20 @@ Standard C library .SH SYNOPSIS .nf .B #include <unistd.h> -.PP +.P .BI "long sysconf(int " "name" ); .fi .SH DESCRIPTION POSIX allows an application to test at compile or run time whether certain options are supported, or what the value is of certain configurable constants or limits. -.PP +.P At compile time this is done by including .I <unistd.h> and/or .I <limits.h> and testing the value of certain macros. -.PP +.P At run time, one can ask for numerical values using the present function .BR sysconf (). One can ask for numerical values that may depend @@ -37,12 +37,12 @@ and .BR pathconf (3). One can ask for string values using .BR confstr (3). -.PP +.P The values obtained from these functions are system configuration constants. They do not change during the lifetime of a process. .\" except that sysconf(_SC_OPEN_MAX) may change answer after a call .\" to setrlimit( ) which changes the RLIMIT_NOFILE soft limit -.PP +.P For options, typically, there is a constant .B _POSIX_FOO that may be defined in @@ -65,7 +65,7 @@ argument will be .BR _SC_FOO . For a list of options, see .BR posixoptions (7). -.PP +.P For variables or limits, typically, there is a constant .BR _FOO , maybe defined in @@ -90,7 +90,7 @@ We give the name of the variable, the name of the .BR sysconf () argument used to inquire about its value, and a short description. -.PP +.P First, the POSIX.1 compatible values. .\" [for the moment: only the things that are unconditionally present] .\" .TP @@ -285,7 +285,7 @@ is supported. .BR POSIX2_SW_DEV " - " _SC_2_SW_DEV indicates whether the POSIX.2 software development utilities option is supported. -.PP +.P These values also exist, but may not be standard. .TP .BR "" " - " _SC_PHYS_PAGES @@ -366,7 +366,6 @@ T{ .BR sysconf () T} Thread safety MT-Safe env .TE -.sp 1 .SH STANDARDS POSIX.1-2008. .SH HISTORY @@ -377,7 +376,7 @@ It is difficult to use because it is not specified how much of the argument space for .BR exec (3) is consumed by the user's environment variables. -.PP +.P Some returned values may be huge; they are not suitable for allocating memory. .SH SEE ALSO |