diff options
Diffstat (limited to 'linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch')
| -rw-r--r-- | linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch b/linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch index e69de29bb2..cf3e84987b 100644 --- a/linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch +++ b/linux-uml/linux-uml-2.6.7/LegacyTerminalSupport.patch @@ -0,0 +1,81 @@ + +The second adds the LEGACY_PTY config option. Without it, with late 2.6 kernels +/dev/ptyxx won't work. In fact, with those kernels, root_fs_toms does not +work, because it's "unable to allocate TTY pair". And removes the dead option +"UNIX98_PTY_COUNT" (just commented out for now). + +Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it> +--- + + uml-linux-2.6.7-paolo/arch/um/Kconfig_char | 57 ++++++++++++++++++++++++++--- + 1 files changed, 53 insertions(+), 4 deletions(-) + +diff -puN arch/um/Kconfig_char~LegacyTerminalSupport arch/um/Kconfig_char +--- uml-linux-2.6.7/arch/um/Kconfig_char~LegacyTerminalSupport 2004-06-29 21:03:01.420421432 +0200 ++++ uml-linux-2.6.7-paolo/arch/um/Kconfig_char 2004-06-29 21:03:01.423420976 +0200 +@@ -108,11 +108,60 @@ config SSL_CHAN + + config UNIX98_PTYS + bool "Unix98 PTY support" +- +-config UNIX98_PTY_COUNT +- int "Maximum number of Unix98 PTYs in use (0-2048)" +- depends on UNIX98_PTYS ++ ---help--- ++ A pseudo terminal (PTY) is a software device consisting of two ++ halves: a master and a slave. The slave device behaves identical to ++ a physical terminal; the master device is used by a process to ++ read data from and write data to the slave, thereby emulating a ++ terminal. Typical programs for the master side are telnet servers ++ and xterms. ++ ++ Linux has traditionally used the BSD-like names /dev/ptyxx for ++ masters and /dev/ttyxx for slaves of pseudo terminals. This scheme ++ has a number of problems. The GNU C library glibc 2.1 and later, ++ however, supports the Unix98 naming standard: in order to acquire a ++ pseudo terminal, a process opens /dev/ptmx; the number of the pseudo ++ terminal is then made available to the process and the pseudo ++ terminal slave can be accessed as /dev/pts/<number>. What was ++ traditionally /dev/ttyp2 will then be /dev/pts/2, for example. ++ ++ All modern Linux systems use the Unix98 ptys. Say Y unless ++ you're on an embedded system and want to conserve memory. ++ ++config LEGACY_PTYS ++ bool "Legacy (BSD) PTY support" ++ default y ++ ---help--- ++ A pseudo terminal (PTY) is a software device consisting of two ++ halves: a master and a slave. The slave device behaves identical to ++ a physical terminal; the master device is used by a process to ++ read data from and write data to the slave, thereby emulating a ++ terminal. Typical programs for the master side are telnet servers ++ and xterms. ++ ++ Linux has traditionally used the BSD-like names /dev/ptyxx ++ for masters and /dev/ttyxx for slaves of pseudo ++ terminals. This scheme has a number of problems, including ++ security. This option enables these legacy devices; on most ++ systems, it is safe to say N. ++ ++ ++config LEGACY_PTY_COUNT ++ int "Maximum number of legacy PTY in use" ++ depends on LEGACY_PTYS + default "256" ++ ---help--- ++ The maximum number of legacy PTYs that can be used at any one time. ++ The default is 256, and should be more than enough. Embedded ++ systems may want to reduce this to save memory. ++ ++ When not in use, each legacy PTY occupies 12 bytes on 32-bit ++ architectures and 24 bytes on 64-bit architectures. ++ ++#config UNIX98_PTY_COUNT ++# int "Maximum number of Unix98 PTYs in use (0-2048)" ++# depends on UNIX98_PTYS ++# default "256" + + config WATCHDOG + bool "Watchdog Timer Support" +_ |