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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2007-07-08 16:21:19 +0000 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2007-07-08 16:21:19 +0000 |
| commit | 8c4f34f89be773d8a4e4a8e84fac761fe1598d30 (patch) | |
| tree | 72d8cafbfd7a6e9d7f0f15359849b6b6d24b9315 | |
| parent | 22399250c3eea4e2fbbadf0c045413a2f10652f7 (diff) | |
| download | man-pages-8c4f34f89be773d8a4e4a8e84fac761fe1598d30.tar.gz | |
ffix
| -rw-r--r-- | man2/seteuid.2 | 3 | ||||
| -rw-r--r-- | man2/setgid.2 | 4 | ||||
| -rw-r--r-- | man2/setuid.2 | 4 | ||||
| -rw-r--r-- | man3/flockfile.3 | 3 | ||||
| -rw-r--r-- | man3/sysconf.3 | 40 | ||||
| -rw-r--r-- | man3/tmpnam.3 | 7 | ||||
| -rw-r--r-- | man7/posixoptions.7 | 81 |
7 files changed, 105 insertions, 37 deletions
diff --git a/man2/seteuid.2 b/man2/seteuid.2 index 7bd8d28eab..396a51482f 100644 --- a/man2/seteuid.2 +++ b/man2/seteuid.2 @@ -88,7 +88,8 @@ or the saved set-user-ID (saved set-group-ID). Setting the effective user (group) ID to the saved set-user-ID (saved set-group-ID) is possible since Linux 1.1.37 (1.1.38). -On an arbitrary system one should check _POSIX_SAVED_IDS. +On an arbitrary system one should check +.BR _POSIX_SAVED_IDS . .LP Under libc4, libc5 and glibc 2.0 .BI seteuid( euid ) diff --git a/man2/setgid.2 b/man2/setgid.2 index 16133bfdac..dcc936a224 100644 --- a/man2/setgid.2 +++ b/man2/setgid.2 @@ -41,7 +41,9 @@ superuser, the real GID and saved set-group-ID are also set. Under Linux, .BR setgid () -is implemented like the POSIX version with the _POSIX_SAVED_IDS feature. +is implemented like the POSIX version with the +.B _POSIX_SAVED_IDS +feature. This allows a set-group-ID program that is not set-user-ID-root to drop all of its group privileges, do some un-privileged work, and then re-engage the original diff --git a/man2/setuid.2 b/man2/setuid.2 index e54577db69..1c038f0bfc 100644 --- a/man2/setuid.2 +++ b/man2/setuid.2 @@ -42,7 +42,9 @@ the real UID and saved set-user-ID are also set. .PP Under Linux, .BR setuid () -is implemented like the POSIX version with the _POSIX_SAVED_IDS feature. +is implemented like the POSIX version with the +.B _POSIX_SAVED_IDS +feature. This allows a set-user-ID (other than root) program to drop all of its user privileges, do some un-privileged work, and then re-engage the original effective user ID in a secure manner. diff --git a/man3/flockfile.3 b/man3/flockfile.3 index f590997d3c..384052ea3a 100644 --- a/man3/flockfile.3 +++ b/man3/flockfile.3 @@ -116,7 +116,8 @@ None. .SH "CONFORMING TO" POSIX.1-2001. .SH AVAILABILITY -These functions are available when _POSIX_THREAD_SAFE_FUNCTIONS +These functions are available when +.B _POSIX_THREAD_SAFE_FUNCTIONS is defined. They are in libc since libc 5.1.1 and in glibc since glibc 2.0. diff --git a/man3/sysconf.3 b/man3/sysconf.3 index 7ce393dfd4..2ae8069177 100644 --- a/man3/sysconf.3 +++ b/man3/sysconf.3 @@ -128,21 +128,29 @@ First, the POSIX.1 compatible values. The maximum length of the arguments to the .BR exec (3) family of functions. -Must not be less than _POSIX_ARG_MAX (4096). +Must not be less than +.B _POSIX_ARG_MAX +(4096). .TP .BR CHILD_MAX " - " _SC_CHILD_MAX The max number of simultaneous processes per user ID. -Must not be less than _POSIX_CHILD_MAX (25). +Must not be less than +.B _POSIX_CHILD_MAX +(25). .TP .BR HOST_NAME_MAX " - " _SC_HOST_NAME_MAX Max length of a hostname, not including the terminating null byte, as returned by .BR gethostname (2). -Must not be less than _POSIX_HOST_NAME_MAX (255). +Must not be less than +.B _POSIX_HOST_NAME_MAX +(255). .TP .BR LOGIN_NAME_MAX " - " _SC_LOGIN_NAME_MAX Maximum length of a login name, including the terminating null byte. -Must not be less than _POSIX_LOGIN_NAME_MAX (9). +Must not be less than +.B _POSIX_LOGIN_NAME_MAX +(9). .TP .BR "" "clock ticks - " _SC_CLK_TCK The number of clock ticks per second. @@ -155,7 +163,9 @@ does not give information: it must equal 1000000.) .TP .BR OPEN_MAX " - " _SC_OPEN_MAX The maximum number of files that a process can have open at any time. -Must not be less than _POSIX_OPEN_MAX (20). +Must not be less than +.B _POSIX_OPEN_MAX +(20). .TP .BR PAGESIZE " - " _SC_PAGESIZE Size of a page in bytes. @@ -167,29 +177,39 @@ The number of repeated occurrences of a BRE permitted by .BR regexec (3) and .BR regcomp (3). -Must not be less than _POSIX2_RE_DUP_MAX (255). +Must not be less than +.B _POSIX2_RE_DUP_MAX +(255). .TP .BR STREAM_MAX " - " _SC_STREAM_MAX The maximum number of streams that a process can have open at any time. If defined, it has the same value as the standard C macro .BR FOPEN_MAX . -Must not be less than _POSIX_STREAM_MAX (8). +Must not be less than +.B _POSIX_STREAM_MAX +(8). .TP .BR SYMLOOP_MAX The maximum number of symbolic links seen in a pathname before resolution returns .BR ELOOP . -Must not be less than _POSIX_SYMLOOP_MAX (8). +Must not be less than +.B _POSIX_SYMLOOP_MAX +(8). .TP .BR TTY_NAME_MAX " - " _SC_TTY_NAME_MAX The maximum length of terminal device name, including the terminating null byte. -Must not be less than _POSIX_TTY_NAME_MAX (9). +Must not be less than +.BR _POSIX_TTY_NAME_MAX +(9). .TP .BR TZNAME_MAX " - " _SC_TZNAME_MAX The maximum number of bytes in a timezone name. -Must not be less than _POSIX_TZNAME_MAX (6). +Must not be less than +.BR _POSIX_TZNAME_MAX +(6). .TP .BR _POSIX_VERSION " - " _SC_VERSION indicates the year and month the POSIX.1 standard was approved in the diff --git a/man3/tmpnam.3 b/man3/tmpnam.3 index 83ea418dfa..caa8f0d9a4 100644 --- a/man3/tmpnam.3 +++ b/man3/tmpnam.3 @@ -107,8 +107,11 @@ or .LP Portable applications that use threads cannot call .BR tmpnam () -with NULL parameter if either _POSIX_THREADS or -_POSIX_THREAD_SAFE_FUNCTIONS is defined. +with NULL parameter if either +.B _POSIX_THREADS +or +.B _POSIX_THREAD_SAFE_FUNCTIONS +is defined. .LP A POSIX draft proposed to use a function .BR tmpnam_r () diff --git a/man7/posixoptions.7 b/man7/posixoptions.7 index 1ffe180b9c..f5fd56fdfc 100644 --- a/man7/posixoptions.7 +++ b/man7/posixoptions.7 @@ -78,8 +78,11 @@ The functions .fi are present. .SS "BAR - _POSIX_BARRIERS - _SC_BARRIERS" -This option implies the _POSIX_THREADS and -_POSIX_THREAD_SAFE_FUNCTIONS options. +This option implies the +.B _POSIX_THREADS +and +.B _POSIX_THREAD_SAFE_FUNCTIONS +options. The functions .br .nf @@ -106,7 +109,9 @@ This affects the functions .IR fchown (). .\" What about lchown() ? .SS "CS - _POSIX_CLOCK_SELECTION - _SC_CLOCK_SELECTION" -This option implies the _POSIX_TIMERS option. +This option implies the +.B _POSIX_TIMERS +option. The functions .br .nf @@ -124,7 +129,9 @@ then this affects all timers set for an absolute time. .SS "CPT - _POSIX_CPUTIME - _SC_CPUTIME" The clockID CLOCK_PROCESS_CPUTIME_ID is supported. The initial value of this clock is 0 for each process. -This option implies the _POSIX_TIMERS option. +This option implies the +.B _POSIX_TIMERS +option. The function .IR clock_getcpuclockid () is present. @@ -205,8 +212,11 @@ The functions are present. .SS "MON - _POSIX_MONOTONIC_CLOCK - _SC_MONOTONIC_CLOCK" .nf -CLOCK_MONOTONIC is supported. -This option implies the _POSIX_TIMERS option. +.B CLOCK_MONOTONIC +is supported. +This option implies the +.B _POSIX_TIMERS +option. Affected functions are .in +4 .IR aio_suspend (), @@ -223,7 +233,9 @@ Not in final XPG6. .\" IEC 60559 Floating-Point Option. .SS "--- - _POSIX_NO_TRUNC" If this option is in effect (as it always is under POSIX.1-2001) -then pathname components longer than NAME_MAX are not truncated, +then pathname components longer than +.B NAME_MAX +are not truncated, but give an error. This property may be dependent on the path prefix of the component. .SS "PIO - _POSIX_PRIORITIZED_IO - _SC_PRIORITIZED_IO" @@ -256,7 +268,9 @@ The functions .br .fi are present. -If also _POSIX_SPAWN is in effect, then the functions +If also +.B _POSIX_SPAWN +is in effect, then the functions .br .nf .in +4 @@ -273,9 +287,13 @@ Affected functions are .IR getsockopt (), .IR setsockopt (). .SS "--- - _POSIX_READER_WRITER_LOCKS - _SC_READER_WRITER_LOCKS" -This option implies the _POSIX_THREADS option. +This option implies the +.B _POSIX_THREADS +option. Conversely, -under POSIX.1-2001 the _POSIX_THREADS option implies this option. +under POSIX.1-2001 the +.B _POSIX_THREADS +option implies this option. .nf The functions .in +4 @@ -380,7 +398,9 @@ This option describes support for process creation in a context where it is difficult or impossible to use .IR fork (), for example, because no MMU is present. -If _POSIX_SPAWN is in effect, then the include file +If +.B _POSIX_SPAWN +is in effect, then the include file .I <spawn.h> and the functions .br @@ -407,7 +427,9 @@ and the functions .br .fi are present. -If also _POSIX_PRIORITY_SCHEDULING is in effect, then +If also +.B _POSIX_PRIORITY_SCHEDULING +is in effect, then the functions .br .nf @@ -420,8 +442,11 @@ the functions are present. .fi .SS "SPI - _POSIX_SPIN_LOCKS - _SC_SPIN_LOCKS" -This option implies the _POSIX_THREADS and -_POSIX_THREAD_SAFE_FUNCTIONS options. +This option implies the +.B _POSIX_THREADS +and +.B _POSIX_THREAD_SAFE_FUNCTIONS +options. The functions .br .nf @@ -436,8 +461,12 @@ The functions .fi are present. .SS "SS - _POSIX_SPORADIC_SERVER - _SC_SPORADIC_SERVER" -The scheduling policy SCHED_SPORADIC is supported. -This option implies the _POSIX_PRIORITY_SCHEDULING option. +The scheduling policy +.B SCHED_SPORADIC +is supported. +This option implies the +.B _POSIX_PRIORITY_SCHEDULING +option. Affected functions are .br .nf @@ -479,7 +508,9 @@ Affected functions are .fi .SS "TCT - _POSIX_THREAD_CPUTIME - _SC_THREAD_CPUTIME" The clockID CLOCK_THREAD_CPUTIME_ID is supported. -This option implies the _POSIX_TIMERS option. +This option implies the +.B _POSIX_TIMERS +option. Affected functions are .br .nf @@ -579,7 +610,9 @@ Affected functions are .br .fi .SS "TSP - _POSIX_THREAD_SPORADIC_SERVER - _SC_THREAD_SPORADIC_SERVER" -This option implies the _POSIX_THREAD_PRIORITY_SCHEDULING option. +This option implies the +.B _POSIX_THREAD_PRIORITY_SCHEDULING +option. Affected functions are .br .nf @@ -724,7 +757,9 @@ The functions .fi are present. .SS "TEF - _POSIX_TRACE_EVENT_FILTER - _SC_TRACE_EVENT_FILTER" -This option implies the _POSIX_TRACE option. +This option implies the +.B _POSIX_TRACE +option. The functions .br .nf @@ -743,7 +778,9 @@ The functions are present. .SS "TRI - _POSIX_TRACE_INHERIT - _SC_TRACE_INHERIT" Tracing children of the traced process is supported. -This option implies the _POSIX_TRACE option. +This option implies the +.B _POSIX_TRACE +option. The functions .br .nf @@ -755,7 +792,9 @@ The functions .fi are present. .SS "TRL - _POSIX_TRACE_LOG - _SC_TRACE_LOG" -This option implies the _POSIX_TRACE option. +This option implies the +.B _POSIX_TRACE +option. The functions .br .nf |