diff options
Diffstat (limited to 'man2/prctl.2')
| -rw-r--r-- | man2/prctl.2 | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/man2/prctl.2 b/man2/prctl.2 index bfd94a477..a592bba70 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -36,7 +36,7 @@ .\" 2014-11-10 Dave Hansen, document PR_MPX_{EN,DIS}ABLE_MANAGEMENT .\" .\" -.TH prctl 2 2023-02-10 "Linux man-pages 6.03" +.TH prctl 2 2023-07-28 "Linux man-pages 6.05.01" .SH NAME prctl \- operations on a process or thread .SH LIBRARY @@ -46,8 +46,9 @@ Standard C library .nf .B #include <sys/prctl.h> .PP -.BI "int prctl(int " option ", unsigned long " arg2 ", unsigned long " arg3 , -.BI " unsigned long " arg4 ", unsigned long " arg5 ); +.BI "int prctl(int " option ", ..." +.BI " \fR/*\fP unsigned long " arg2 ", unsigned long " arg3 , +.BI " unsigned long " arg4 ", unsigned long " arg5 " \fR*/\fP );" .fi .SH DESCRIPTION .BR prctl () @@ -1049,9 +1050,12 @@ before Linux 5.3). .BR PR_SET_PDEATHSIG " (since Linux 2.1.57)" Set the parent-death signal of the calling process to \fIarg2\fP (either a signal value -in the range 1..\c -.BR NSIG "\-1" , -or 0 to clear). +in the range +.RB [ 1 , +.IR NSIG\~\-\~1 ], +or +.B 0 +to clear). This is the signal that the calling process will get when its parent dies. .IP @@ -1652,7 +1656,7 @@ or .IP For more information, see the kernel source file -.I Documentation/admin-guide/syscall\-user\-dispatch.rst +.I Documentation/admin\-guide/syscall\-user\-dispatch.rst .\" prctl PR_SET_TAGGED_ADDR_CTRL .\" commit 63f0c60379650d82250f22e4cf4137ef3dc4f43d .TP @@ -2026,6 +2030,17 @@ system call on Tru64). for information on versions and architectures.) Return unaligned access control bits, in the location pointed to by .IR "(unsigned int\~*) arg2" . +.\" prctl PR_GET_AUXV +.TP +.BR PR_GET_AUXV " (since Linux 6.4)" +Get the auxiliary vector (auxv) into the buffer pointed to by +.IR "(void\~*) arg2" , +whose length is given by \fIarg3\fP. +If the buffer is not long enough for the full auxiliary vector, +the copy will be truncated. +Return (as the function result) +the full length of the auxiliary vector. +\fIarg4\fP and \fIarg5\fP must be 0. .SH RETURN VALUE On success, .BR PR_CAP_AMBIENT + PR_CAP_AMBIENT_IS_SET , @@ -2044,6 +2059,7 @@ On success, .BR PR_GET_THP_DISABLE , .BR PR_GET_TIMING , .BR PR_GET_TIMERSLACK , +.BR PR_GET_AUXV , and (if it returns) .B PR_GET_SECCOMP return the nonnegative values described above. @@ -2502,12 +2518,6 @@ is not nor .BR PR_SPEC_DISABLE_NOEXEC . .SH VERSIONS -The -.BR prctl () -system call was introduced in Linux 2.1.57. -.\" The library interface was added in glibc 2.0.6 -.SH STANDARDS -This call is Linux-specific. IRIX has a .BR prctl () system call (also introduced in Linux 2.1.44 @@ -2524,6 +2534,11 @@ and options to get the maximum number of processes per user, get the maximum number of processors the calling process can use, find out whether a specified process is currently blocked, get or set the maximum stack size, and so on. +.SH STANDARDS +Linux. +.SH HISTORY +Linux 2.1.57, +glibc 2.0.6 .SH SEE ALSO .BR signal (2), .BR core (5) |