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/freebsd/lib/libsys/
H A Dkill.233 .Nd send signal to a process
44 system call sends the signal given by
49 process or a group of processes.
57 signal is actually sent.
61 For a process to have permission to send a signal to a process designated
64 the user must be the super-user, or
67 A single exception is the signal SIGCONT, which may always be sent
72 is set to 1, the user is not a super-user, and
73 the receiver is set-uid, then
77 .Bl -tag -width Ds
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H A Dwait.270 or a signal is received.
125 .Bd -literal
145 .Pf non- Dv NULL ,
148 signal delivered when the process changed state.
159 identifiers in addition to process IDs and process group IDs.
160 .Bl -bullet -offset indent
179 wait for the child process with a process group ID equal to
205 wait for any child process in the same process group as the caller.
208 Non-standard identifier types supported by this
214 .Bl -tag -width P_JAILID
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H A D_exit.245 .Bl -bullet
56 signal,
63 The parent process-ID of all of the calling process's existing child
64 processes are set to the process-ID of the calling process's reaper;
75 If the termination of the process causes any process group
77 of the group have now exited; see
78 .Dq orphaned process group
81 and if any member of the orphaned group is stopped,
84 signal and the
86 signal are sent to all members of the newly-orphaned process group.
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H A Dmq_notify.229 .\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
30 .\" Portable Operating System Interface (POSIX), The Open Group Base
31 .\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
32 .\" Electrical and Electronics Engineers, Inc and The Open Group. In the
34 .\" The Open Group Standard, the original IEEE and The Open Group Standard is
60 the process when the message queue transitions from empty to non-empty.
73 .Fa notification->sigev_notify
76 then no signal will be posted, but the error status and the return status
83 the signal specified in
84 .Fa notification->sigev_signo
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H A Dexecve.275 .Bd -ragged -offset indent -compact
104 is a pointer to a null-terminated array of
105 character pointers to null-terminated character strings.
115 is also a pointer to a null-terminated array of
116 character pointers to null-terminated strings.
124 the new process image, except for those for which the close-on-exec
134 is called, and the process will gain privilege as a result of set-i
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/freebsd/share/man/man4/
H A Dtermios.462 Every process is associated with a particular process group and session.
63 The grouping is hierarchical: every member of a particular process group is a
75 of signals that stop or start the group as a whole, along with
76 arbitrating which process group has access to the single controlling
91 same process group.
92 A set of processes in the same process group
96 group of the terminal is the same as the process group of a particular
99 When the process group of the terminal is different from the process group of
107 sets the process group of the terminal to the process group
109 sets the process group of the terminal back to its own process
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H A Ddtrace_proc.434 .Fn proc:::exec-failure "int"
35 .Fn proc:::exec-success "char *"
37 .Fn proc:::signal-clear "int" "ksiginfo_t *"
38 .Fn proc:::signal-discard "struct thread *" "struct proc *" "int"
39 .Fn proc:::signal-send "struct thread *" "struct proc *" "int"
72 .Fn proc:::exec-failure
77 .Fn proc:::exec-success
85 signal code; valid values are documented in the
88 .Pa signal.h .
95 .Fn proc:::signal-send
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/freebsd/usr.sbin/bluetooth/sdpd/
H A Dmain.c1 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
39 #include <signal.h>
56 static int32_t drop_root (char const *user, char const *group);
71 char const *user = "nobody", *group = "nobody"; in main() local
75 while ((opt = getopt(argc, argv, "c:dg:hu:")) != -1) { in main()
85 case 'g': /* group */ in main()
86 group = optarg; in main()
109 /* Set signal handlers */ in main()
116 log_crit("Could not install signal handlers. %s (%d)", in main()
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/freebsd/bin/kill/
H A Dkill.11 .\"-
37 .Nd terminate or signal a process
54 utility sends a signal to the processes specified by the
58 Only the super-user may send signals to other users' processes.
61 .Bl -tag -width indent
63 A symbolic signal name specifying the signal to be sent instead of the
67 If no operand is given, list the signal names; otherwise, write
68 the signal name corresponding to
71 A symbolic signal name specifying the signal to be sent instead of the
75 A non-negative decimal integer, specifying the signal to be sent instead
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/freebsd/share/man/man9/
H A Dsignal.931 .Nm signal ,
58 .Nd "kernel signal functions"
124 is a valid signal number.
134 is a valid signal number.
167 macro determines if two signal sets are equal; that is, the same signals
172 macro determines if two signal sets differ; that is, if any signal set in
228 signal from
237 If the process has a pending signal and the process is currently being
240 will return true even if the signal is masked.
244 function returns the signal number that should be delivered to process
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H A Dpsignal.938 .Nd post signal to a thread, process, or process group
49 These functions post a signal to a thread or one or more processes.
53 .Bq 1- Ns Dv NSIG .
57 function posts signal number
67 With a few exceptions noted below, the target process signal disposition is
68 updated and is marked as runnable, so further handling of the signal is done
75 .Bl -bullet -offset indent
78 The signal will be
81 The target process is currently ignoring the signal.
83 If a stop signal is sent to a sleeping process that takes the
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/freebsd/lib/libc/compat-43/
H A Dkillpg.233 .Nd send signal to a process group
45 sends the signal
47 to the process group
56 sends the signal to the sending process's process group.
60 at least one process in the receiving process group.
62 .Rv -std killpg
67 will fail and no signal will be sent if:
68 .Bl -tag -width Er
73 is not a valid signal number.
75 No process can be found in the process group specified by
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/freebsd/usr.sbin/newsyslog/
H A Dnewsyslog.conf.567 .Bl -tag -width indent
94 .It Ar owner : Ns Ar group
95 This optional field specifies the owner and group for the archive file.
101 .Ar group
106 .Pa /etc/group .
112 the owner, group, and others.)
141 .So Li \&@ Sc Ns No -sign
166 The lead-in character for a restricted
192 .Bl -item -compact -offset indent
217 The lead-in character for day, week, and month specification is a
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/freebsd/sys/contrib/device-tree/Bindings/pinctrl/
H A Dnxp,s32g2-siul2-pinctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/pinctrl/nxp,s32g2-siul
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H A Dstarfive,jh7100-pinctrl.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/starfive,jh7100-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 Bindings for the JH7100 RISC-V SoC from StarFive Ltd.
15 interesting 2-layered approach to pin muxing best illustrated by the diagram
18 Signal group 0, 1, ... or 6
21 LCD output -----------------| |
22 CMOS Camera interface ------| |--- PAD_GPIO[0]
23 Ethernet PHY interface -----| MUX |--- PAD_GPIO[1]
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/freebsd/contrib/wpa/wpa_supplicant/dbus/
H A Ddbus_new.c2 * WPA Supplicant / dbus-based control interface
4 * Copyright (c) 2009-2010, Witold Sowa <witold.sowa@gmail.com>
36 * a signal that it needs. While it can also unregister, we must
39 * DBus is to register for the NameOwnerChanged signal which will
40 * signal an owner change to NULL if the peer closes the socket
43 * Handle this signal via a filter function whenever necessary.
79 for (wpa_s = priv->global->ifaces; wpa_s; wpa_s = wpa_s->next) { in noc_filter()
80 if (wpa_s->preq_notify_peer != NULL && in noc_filter()
81 os_strcmp(name, wpa_s->preq_notify_peer) == 0 && in noc_filter()
84 os_free(wpa_s->preq_notify_peer); in noc_filter()
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/freebsd/share/doc/psd/05.sysman/
H A Da.t58 getgid get accounting group id
59 getegid get effective accounting group id
60 getgroups get access group set
61 setregid set real and effective group id's
62 setgroups set access group set
63 getpgrp get process group
64 setpgrp set process group
92 <signal.h> signal definitions
93 sigvec set handler for signal
94 kill send signal to process
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H A D1.3.t34 to a process. Signal delivery resembles the occurrence of a hardware
35 interrupt: the signal is blocked from further occurrence,
38 the \fIhandler\fP to which a signal is delivered, or specify that
39 the signal is to be \fIblocked\fP or \fIignored\fP. A process may
46 the current memory image of the process for use in post-mortem debugging.
52 to a process is implementation specific. Signal routines execute
53 with the signal that caused their invocation \fIblocked\fP, but other
57 Signal types
63 The set of signals is defined in the file \fI<signal.h>\fP.
72 Other, more cpu-specific hardware signals exist,
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/freebsd/share/doc/psd/21.ipc/
H A D5.t58 support only in-band signaling (i.e. the urgent data is
65 If the socket has a process group, a SIGURG signal is generated
67 A process can set the process group
68 or process id to be informed by the SIGURG signal via the
74 Neither the signal nor the select indicate the actual arrival
75 of the out-of-band data, but only notification that it is pending.
81 client and server processes. When a signal
97 to transmission of the out of band signal. The routine used
99 interrupt or quit signal is shown in Figure 5.
101 then reads the out-of-band byte.
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/freebsd/sys/contrib/device-tree/Bindings/gpio/
H A Dgpio.txt5 -----------------
7 GPIO properties should be named "[<name>-]gpios", with <name> being the purpose
8 of this GPIO for the device. While a non-existent <name> is considered valid
10 for new bindings. Also, GPIO properties named "[<name>-]gpio" are valid and old
24 and bit-banged data signals:
27 gpio-controller;
28 #gpio-cells = <2>;
32 data-gpios = <&gpio1 12 0>,
44 recommended to use the two-cell approach.
48 include/dt-bindings/gpio/gpio.h whenever possible:
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/freebsd/contrib/nvi/cl/
H A DREADME.signal21 Disabled by the signal initialization routines. Historically, ^\
26 key-read routine, so there are no reentrancy issues. This means
31 to permit the user to interrupt long-running operations. Generally, a
50 the place -- I hate to litter the source code with that. For example,
58 on DISCARD and LNEXT. To clarify, what vi WANTS is 8-bit clean, with
68 3) and POSIX 1003.1-1992, so it should be fairly portable.
70 The second problem is that vi permits you to enter literal signal
116 the text input routines will treat it as a signal instead of as a
127 newterm() interface, the TSTP signal will leave you in raw mode, and the
129 initscr() interface, the TSTP signal will return you to the correct shell
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/freebsd/usr.bin/procstat/
H A Dprocstat.11 .\"-
2 .\" Copyright (c) 2007-2009 Robert N. M. Watson
34 .Op Fl -libxo
42 .Op Fl -libxo
50 .Op Fl -libxo
73 .Op Fl -libxo
96 .Op Fl -libxo
104 .Op Fl -libxo
107 .Op Fl -libxo
110 .Op Fl -libxo
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/freebsd/usr.sbin/bsdinstall/runconsoles/
H A Dchild.c1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
39 #include <signal.h>
53 /* -1: not started, 0: reaped */
54 static volatile pid_t grandchild_pid = -1;
110 while ((void)(pid = waitpid(-1, &status, WNOHANG)), in sigchld_handler()
111 pid != -1 && pid != 0) { in sigchld_handler()
125 if (pid == -1 && errno == ECHILD && grandchild_pid == 0) in sigchld_handler()
138 * with that signal, otherwise kill all our descendants with that in exit_signal_handler()
139 * signal and let the main program pick up the grandchild's death. in exit_signal_handler()
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/freebsd/contrib/kyua/utils/process/
H A Doperations.cpp35 #include <signal.h>
61 /// process to construct the arguments list, which would have side-effects in
69 /// Exception-based, type-improved version of wait(2).
80 if (pid == -1) { in safe_wait()
89 /// Exception-based, type-improved version of waitpid(2).
101 if (process::detail::syscall_waitpid(pid, &stat_loc, 0) == -1) { in safe_waitpid()
169 INV(ret == -1); in exec_unsafe()
189 /// Forcibly kills a process group started by us.
191 /// This function is safe to call from an signal handler context.
193 /// Pretty much all of our subprocesses run in their own process group so that
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/freebsd/lib/libc/gen/
H A Dposix_spawn.326 .\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
27 .\" Portable Operating System Interface (POSIX), The Open Group Base
28 .\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
29 .\" Electrical and Electronics Engineers, Inc and The Open Group. In the
31 .\" The Open Group Standard, the original IEEE and The Open Group Standard is
75 entered as a C-language function call as follows:
76 .Bd -literal -offset indent
86 .Bd -literal -offset indent
95 is an array of character pointers to null-terminated
114 is an array of character pointers to null-terminated strings.
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