Some style and "look" fixes
Reviewed by: mpp
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@ -56,6 +56,6 @@ returns the size of this table.
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.Xr select 2
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.Sh HISTORY
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The
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.Nm
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.Fn getdtablesize
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function call appeared in
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.Bx 4.2 .
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@ -58,7 +58,7 @@ and is inherited by all processes descended from the login shell.
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(This is true even if some of those processes assume another user ID,
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for example when
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.Xr su 1
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is used.)
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is used).
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.Pp
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.Fn Setlogin
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sets the login name of the user associated with the current session to
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@ -59,7 +59,9 @@ call, and set with the
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call. The time is expressed in seconds and microseconds
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since midnight (0 hour), January 1, 1970. The resolution of the system
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clock is hardware dependent, and the time may be updated continuously or
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in ``ticks.'' If
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in
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.Dq ticks .
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If
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.Fa tp
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or
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.Fa tzp
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@ -47,7 +47,9 @@
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The
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.Fn issetugid
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function returns 1 if the process environment or memory address space
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is considered ``tainted'', and returns 0 otherwise.
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is considered
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.Dq tainted ,
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and returns 0 otherwise.
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.Pp
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A process is tainted if it was created as a result of an
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.Xr execve 2
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@ -61,13 +63,16 @@ that was obtained from the user, in particular the results from
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.Xr getenv 3
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should be viewed with suspicion if it is used to control operation.
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.Pp
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A ``tainted'' status is inherited by child processes as a result of the
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A
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.Dq tainted
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status is inherited by child processes as a result of the
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.Xr fork 2
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system call (or other library code that calls fork, such as
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.Xr popen 3 ) .
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.Pp
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It is assumed that a program that clears all privileges as it prepares
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to execute another will also reset the environment, hence the ``tainted''
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to execute another will also reset the environment, hence the
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.Dq tainted
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status will not be passed on. This is important for programs such as
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.Xr su 1
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which begin setuid but need to be able to create an untainted process.
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@ -162,6 +162,6 @@ support.
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.Xr ktrace 1
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.Sh HISTORY
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A
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.Nm ktrace
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.Fn ktrace
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function call first appeared in
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.Bx 4.4 .
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@ -67,15 +67,20 @@ The address of an optional command specific data structure,
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may be given; its interpretation
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is discussed below with each command.
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.Pp
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Currently quotas are supported only for the ``ufs'' filesystem.
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For ``ufs'',
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Currently quotas are supported only for the
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.Dq ufs
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filesystem.
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For
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.Dq ufs ,
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a command is composed of a primary command (see below)
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and a command type used to interpret the
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.Fa id .
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Types are supported for interpretation of user identifiers (USRQUOTA)
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and group identifiers (GRPQUOTA).
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The ``ufs'' specific commands are:
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.Bl -tag -width Q_QUOTAON
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The
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.Dq ufs
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specific commands are:
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.Bl -tag -width Q_QUOTAOFFxx
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.It Dv Q_QUOTAON
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Enable disk quotas for the filesystem specified by
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.Fa path .
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@ -121,6 +121,7 @@ one or more of the values:
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.It Dv MSG_PEEK Ta peek at incoming message
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.It Dv MSG_WAITALL Ta wait for full request or error
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.El
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.Pp
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The
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.Dv MSG_OOB
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flag requests receipt of out-of-band data
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@ -183,6 +184,7 @@ struct cmsghdr {
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/* followed by
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u_char cmsg_data[]; */
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};
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.Pp
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.Ed
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As an example, one could use this to learn of changes in the data-stream
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in XNS/SPP, or in ISO, to obtain user-connection-request data by requesting
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@ -98,7 +98,7 @@ The specified process was not found.
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The original author was
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.An Henrik Vestergaard Draboel Aq hvd@terry.ping.dk .
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This implementation in
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.Bx Free
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.Fx
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was substantially rewritten by
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.An David Greenman .
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.Sh SEE ALSO
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@ -40,6 +40,7 @@
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.Nd return from signal
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.Sh SYNOPSIS
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.Fd #include <signal.h>
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.Pp
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.Bd -literal
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struct sigcontext {
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int sc_onstack; /* sigstack state to restore */
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