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Modify SIGSTP to SIGTSTP

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Follow the POSIX description.
SIGTSTP should be sent when the Ctrl-Z characters is encountered, not SIGSTP.

Testing:
Built with hifive1-revb:nsh (CONFIG_SERIAL_TERMIOS=y, CONFIG_SIG_DEFAULT=y and CONFIG_TTY_SIGTSTP=y)
This commit is contained in:
Yoshinori Sugino
2020-10-29 13:53:41 +09:00
committed by Xiang Xiao
parent 96d1f018c4
commit c13f869432
22 changed files with 57 additions and 57 deletions
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drivers/serial/Kconfig
+12 -12
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@@ -192,14 +192,14 @@ config TTY_SIGINT
INTR SIGINT Ctrl-C ETX(0x03) Interrupt
KILL SIGKILL Ctrl-U NAK(0x15) Kill
QUIT SIGQUIT Ctrl-\ FS (0x1c) Quit
SUSP SIGSTP Ctrl-Z SUB(0x1a) Suspend
DSUSP SIGSTP Ctrl-Y EM (0x19) Delayed suspend
SUSP SIGTSTP Ctrl-Z SUB(0x1a) Suspend
DSUSP SIGTSTP Ctrl-Y EM (0x19) Delayed suspend
Additional requirements:
- SIGKILL cannot be caught or ignored. Compared to SIGTERM which
is like SIGKILL but can be caught or ignored.
- SIGQUIT is like SIGINT but causes generation of a core dump
- SIGSTOP cannot be caught or ignored. SIGSTP is like SIGSTOP but
- SIGSTOP cannot be caught or ignored. SIGTSTP is like SIGSTOP but
can be caught or ignored.
- The delayed suspend (DSUSD) is like suspend (SUPD), except that
the suspension is delayed until the next read operation
@@ -219,8 +219,8 @@ config TTY_SIGINT_CHAR
REVISIT: Traditionally Ctrl-C would generate SIGINT. Ctrl-D is the
End-of-File character that should close the stream.
config TTY_SIGSTP
bool "Support SIGSTP"
config TTY_SIGTSTP
bool "Support SIGTSTP"
default n
select CONFIG_SIG_SIGSTOP_ACTION
depends on SERIAL_TERMIOS
@@ -237,24 +237,24 @@ config TTY_SIGSTP
INTR SIGINT Ctrl-C ETX(0x03) Interrupt
KILL SIGKILL Ctrl-U NAK(0x15) Kill
QUIT SIGQUIT Ctrl-\ FS (0x1c) Quit
SUSP SIGSTP Ctrl-Z SUB(0x1a) Suspend
DSUSP SIGSTP Ctrl-Y EM (0x19) Delayed suspend
SUSP SIGTSTP Ctrl-Z SUB(0x1a) Suspend
DSUSP SIGTSTP Ctrl-Y EM (0x19) Delayed suspend
Additional requirements:
- SIGKILL cannot be caught or ignored. Compared to SIGTERM which
is like SIGKILL but can be caught or ignored.
- SIGQUIT is like SIGINT but causes generation of a core dump
- SIGSTOP cannot be caught or ignored. SIGSTP is like SIGSTOP but
- SIGSTOP cannot be caught or ignored. SIGTSTP is like SIGSTOP but
can be caught or ignored.
- The delayed suspend (DSUSD) is like suspend (SUPD), except that
the suspension is delayed until the next read operation
config TTY_SIGSTP_CHAR
hex "Serial parse SIGSTP characters"
config TTY_SIGTSTP_CHAR
hex "Serial parse SIGTSTP characters"
default 0x1a
depends on TTY_SIGSTP
depends on TTY_SIGTSTP
---help---
Use ASCII 0x1a (Ctrl-z) input to determine whether to send a SIGSTP
Use ASCII 0x1a (Ctrl-z) input to determine whether to send a SIGTSTP
event. Other characters may also be selected.
#