From: Matt Kraai Date: Mon, 23 Jul 2001 14:52:08 +0000 (-0000) Subject: Add support for devfs device names. X-Git-Tag: 0_60_0~47 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=439e3df65300100e4b63580141eaa238c30431d5;p=oweals%2Fbusybox.git Add support for devfs device names. --- diff --git a/Changelog b/Changelog index eadff4d14..76a5e4b94 100644 --- a/Changelog +++ b/Changelog @@ -9,6 +9,7 @@ Other Changes: * Vladimir Oleynik -- Fixed tr to support 'tr a-z A-Z' syntax, many ash corrections, and others optimizations, and cleanups. + * Matt Kraai -- Added BB_FEATURE_DEVFS to enable devfs device names. -Not Yet Released diff --git a/Config.h b/Config.h index d40a959eb..da62cbfda 100644 --- a/Config.h +++ b/Config.h @@ -407,6 +407,9 @@ // Support for TELNET to pass TERM type to remote host. Adds 384 bytes. #define BB_FEATURE_TELNET_TTYPE // +// Support for devfs. +//#define BB_FEATURE_DEVFS +// // End of Features List // // diff --git a/console-tools/dumpkmap.c b/console-tools/dumpkmap.c index 0da01868b..22652a5e2 100644 --- a/console-tools/dumpkmap.c +++ b/console-tools/dumpkmap.c @@ -51,9 +51,9 @@ int dumpkmap_main(int argc, char **argv) show_usage(); } - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) { - perror_msg("Error opening /dev/tty0"); + perror_msg("Error opening " CURRENT_VC); return EXIT_FAILURE; } diff --git a/console-tools/loadacm.c b/console-tools/loadacm.c index 5dbf03e36..3fb4e7665 100644 --- a/console-tools/loadacm.c +++ b/console-tools/loadacm.c @@ -37,9 +37,9 @@ int loadacm_main(int argc, char **argv) show_usage(); } - fd = open("/dev/tty", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) { - perror_msg_and_die("Error opening /dev/tty1"); + perror_msg_and_die("Error opening " CURRENT_VC); } if (screen_map_load(fd, stdin)) { diff --git a/console-tools/loadfont.c b/console-tools/loadfont.c index 1a724ca85..d66500195 100644 --- a/console-tools/loadfont.c +++ b/console-tools/loadfont.c @@ -46,9 +46,9 @@ extern int loadfont_main(int argc, char **argv) if (argc != 1) show_usage(); - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) - perror_msg_and_die("Error opening /dev/tty0"); + perror_msg_and_die("Error opening " CURRENT_VC); loadnewfont(fd); return EXIT_SUCCESS; diff --git a/console-tools/loadkmap.c b/console-tools/loadkmap.c index dcb5c1caa..4f217d630 100644 --- a/console-tools/loadkmap.c +++ b/console-tools/loadkmap.c @@ -53,9 +53,9 @@ int loadkmap_main(int argc, char **argv) if (argc != 1) show_usage(); - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) - perror_msg_and_die("Error opening /dev/tty0"); + perror_msg_and_die("Error opening " CURRENT_VC); read(0, buff, 7); if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7)) diff --git a/dumpkmap.c b/dumpkmap.c index 0da01868b..22652a5e2 100644 --- a/dumpkmap.c +++ b/dumpkmap.c @@ -51,9 +51,9 @@ int dumpkmap_main(int argc, char **argv) show_usage(); } - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) { - perror_msg("Error opening /dev/tty0"); + perror_msg("Error opening " CURRENT_VC); return EXIT_FAILURE; } diff --git a/include/libbb.h b/include/libbb.h index c167e10bc..3cf932dc4 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -288,4 +288,32 @@ extern const char * const name_longer_than_foo; extern const char * const unknown; extern const char * const can_not_create_raw_socket; +#ifdef BB_FEATURE_DEVFS +# define CURRENT_VC "/dev/vc/0" +# define VC_1 "/dev/vc/1" +# define VC_2 "/dev/vc/2" +# define VC_3 "/dev/vc/3" +# define VC_4 "/dev/vc/4" +# define VC_5 "/dev/vc/5" +# define SC_0 "/dev/tts/0" +# define SC_1 "/dev/tts/1" +# define VC_FORMAT "/dev/vc/%d" +# define SC_FORMAT "/dev/tts/%d" +#else +# define CURRENT_VC "/dev/tty0" +# define VC_1 "/dev/tty1" +# define VC_2 "/dev/tty2" +# define VC_3 "/dev/tty3" +# define VC_4 "/dev/tty4" +# define VC_5 "/dev/tty5" +# define SC_0 "/dev/ttyS0" +# define SC_1 "/dev/ttyS1" +# define VC_FORMAT "/dev/tty%d" +# define SC_FORMAT "/dev/ttyS%d" +#endif + +/* The following devices are the same on devfs and non-devfs systems. */ +#define CURRENT_TTY "/dev/tty" +#define CONSOLE_DEV "/dev/console" + #endif /* __LIBBB_H__ */ diff --git a/init.c b/init.c index ec144ea85..f397b7e0a 100644 --- a/init.c +++ b/init.c @@ -117,13 +117,6 @@ static const int RB_AUTOBOOT = 0x01234567; #endif -#define VT_PRIMARY "/dev/tty1" /* Primary virtual console */ -#define VT_SECONDARY "/dev/tty2" /* Virtual console */ -#define VT_THIRD "/dev/tty3" /* Virtual console */ -#define VT_FOURTH "/dev/tty4" /* Virtual console */ -#define VT_LOG "/dev/tty5" /* Virtual console */ -#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */ -#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */ #define SHELL "/bin/sh" /* Default shell */ #define LOGIN_SHELL "-" SHELL /* Default login shell */ #define INITTAB "/etc/inittab" /* inittab file location */ @@ -176,10 +169,10 @@ struct initActionTag { static initAction *initActionList = NULL; -static char *secondConsole = VT_SECONDARY; -static char *thirdConsole = VT_THIRD; -static char *fourthConsole = VT_FOURTH; -static char *log = VT_LOG; +static char *secondConsole = VC_2; +static char *thirdConsole = VC_3; +static char *fourthConsole = VC_4; +static char *log = VC_5; static int kernelVersion = 0; static char termType[32] = "TERM=linux"; static char console[32] = _PATH_CONSOLE; @@ -341,20 +334,19 @@ static void console_init() else if ((s = getenv("console")) != NULL) { /* remap tty[ab] to /dev/ttyS[01] */ if (strcmp(s, "ttya") == 0) - safe_strncpy(console, SERIAL_CON0, sizeof(console)); + safe_strncpy(console, SC_0, sizeof(console)); else if (strcmp(s, "ttyb") == 0) - safe_strncpy(console, SERIAL_CON1, sizeof(console)); + safe_strncpy(console, SC_1, sizeof(console)); } #endif else { /* 2.2 kernels: identify the real console backend and try to use it */ if (ioctl(0, TIOCGSERIAL, &sr) == 0) { /* this is a serial console */ - snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line); + snprintf(console, sizeof(console) - 1, SC_FORMAT, sr.line); } else if (ioctl(0, VT_GETSTATE, &vt) == 0) { /* this is linux virtual tty */ - snprintf(console, sizeof(console) - 1, "/dev/tty%d", - vt.v_active); + snprintf(console, sizeof(console) - 1, VC_FORMAT, vt.v_active); } else { safe_strncpy(console, _PATH_CONSOLE, sizeof(console)); tried_devcons++; @@ -371,7 +363,7 @@ static void console_init() /* Can't open selected console -- try vt1 */ if (!tried_vtprimary) { tried_vtprimary++; - safe_strncpy(console, VT_PRIMARY, sizeof(console)); + safe_strncpy(console, VC_1, sizeof(console)); continue; } break; diff --git a/init/init.c b/init/init.c index ec144ea85..f397b7e0a 100644 --- a/init/init.c +++ b/init/init.c @@ -117,13 +117,6 @@ static const int RB_AUTOBOOT = 0x01234567; #endif -#define VT_PRIMARY "/dev/tty1" /* Primary virtual console */ -#define VT_SECONDARY "/dev/tty2" /* Virtual console */ -#define VT_THIRD "/dev/tty3" /* Virtual console */ -#define VT_FOURTH "/dev/tty4" /* Virtual console */ -#define VT_LOG "/dev/tty5" /* Virtual console */ -#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */ -#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */ #define SHELL "/bin/sh" /* Default shell */ #define LOGIN_SHELL "-" SHELL /* Default login shell */ #define INITTAB "/etc/inittab" /* inittab file location */ @@ -176,10 +169,10 @@ struct initActionTag { static initAction *initActionList = NULL; -static char *secondConsole = VT_SECONDARY; -static char *thirdConsole = VT_THIRD; -static char *fourthConsole = VT_FOURTH; -static char *log = VT_LOG; +static char *secondConsole = VC_2; +static char *thirdConsole = VC_3; +static char *fourthConsole = VC_4; +static char *log = VC_5; static int kernelVersion = 0; static char termType[32] = "TERM=linux"; static char console[32] = _PATH_CONSOLE; @@ -341,20 +334,19 @@ static void console_init() else if ((s = getenv("console")) != NULL) { /* remap tty[ab] to /dev/ttyS[01] */ if (strcmp(s, "ttya") == 0) - safe_strncpy(console, SERIAL_CON0, sizeof(console)); + safe_strncpy(console, SC_0, sizeof(console)); else if (strcmp(s, "ttyb") == 0) - safe_strncpy(console, SERIAL_CON1, sizeof(console)); + safe_strncpy(console, SC_1, sizeof(console)); } #endif else { /* 2.2 kernels: identify the real console backend and try to use it */ if (ioctl(0, TIOCGSERIAL, &sr) == 0) { /* this is a serial console */ - snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line); + snprintf(console, sizeof(console) - 1, SC_FORMAT, sr.line); } else if (ioctl(0, VT_GETSTATE, &vt) == 0) { /* this is linux virtual tty */ - snprintf(console, sizeof(console) - 1, "/dev/tty%d", - vt.v_active); + snprintf(console, sizeof(console) - 1, VC_FORMAT, vt.v_active); } else { safe_strncpy(console, _PATH_CONSOLE, sizeof(console)); tried_devcons++; @@ -371,7 +363,7 @@ static void console_init() /* Can't open selected console -- try vt1 */ if (!tried_vtprimary) { tried_vtprimary++; - safe_strncpy(console, VT_PRIMARY, sizeof(console)); + safe_strncpy(console, VC_1, sizeof(console)); continue; } break; diff --git a/libbb/get_console.c b/libbb/get_console.c index 4be9adc84..3b36a59e7 100644 --- a/libbb/get_console.c +++ b/libbb/get_console.c @@ -98,15 +98,15 @@ int get_console_fd(char *tty_name) return fd; } - fd = open_a_console("/dev/tty"); + fd = open_a_console(CURRENT_TTY); if (fd >= 0) return fd; - fd = open_a_console("/dev/tty0"); + fd = open_a_console(CURRENT_VC); if (fd >= 0) return fd; - fd = open_a_console("/dev/console"); + fd = open_a_console(CONSOLE_DEV); if (fd >= 0) return fd; @@ -114,7 +114,7 @@ int get_console_fd(char *tty_name) if (is_a_console(fd)) return fd; - error_msg("Couldnt get a file descriptor referring to the console"); + error_msg("Couldn't get a file descriptor referring to the console"); return -1; /* total failure */ } diff --git a/libbb/libbb.h b/libbb/libbb.h index c167e10bc..3cf932dc4 100644 --- a/libbb/libbb.h +++ b/libbb/libbb.h @@ -288,4 +288,32 @@ extern const char * const name_longer_than_foo; extern const char * const unknown; extern const char * const can_not_create_raw_socket; +#ifdef BB_FEATURE_DEVFS +# define CURRENT_VC "/dev/vc/0" +# define VC_1 "/dev/vc/1" +# define VC_2 "/dev/vc/2" +# define VC_3 "/dev/vc/3" +# define VC_4 "/dev/vc/4" +# define VC_5 "/dev/vc/5" +# define SC_0 "/dev/tts/0" +# define SC_1 "/dev/tts/1" +# define VC_FORMAT "/dev/vc/%d" +# define SC_FORMAT "/dev/tts/%d" +#else +# define CURRENT_VC "/dev/tty0" +# define VC_1 "/dev/tty1" +# define VC_2 "/dev/tty2" +# define VC_3 "/dev/tty3" +# define VC_4 "/dev/tty4" +# define VC_5 "/dev/tty5" +# define SC_0 "/dev/ttyS0" +# define SC_1 "/dev/ttyS1" +# define VC_FORMAT "/dev/tty%d" +# define SC_FORMAT "/dev/ttyS%d" +#endif + +/* The following devices are the same on devfs and non-devfs systems. */ +#define CURRENT_TTY "/dev/tty" +#define CONSOLE_DEV "/dev/console" + #endif /* __LIBBB_H__ */ diff --git a/loadacm.c b/loadacm.c index 5dbf03e36..3fb4e7665 100644 --- a/loadacm.c +++ b/loadacm.c @@ -37,9 +37,9 @@ int loadacm_main(int argc, char **argv) show_usage(); } - fd = open("/dev/tty", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) { - perror_msg_and_die("Error opening /dev/tty1"); + perror_msg_and_die("Error opening " CURRENT_VC); } if (screen_map_load(fd, stdin)) { diff --git a/loadfont.c b/loadfont.c index 1a724ca85..d66500195 100644 --- a/loadfont.c +++ b/loadfont.c @@ -46,9 +46,9 @@ extern int loadfont_main(int argc, char **argv) if (argc != 1) show_usage(); - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) - perror_msg_and_die("Error opening /dev/tty0"); + perror_msg_and_die("Error opening " CURRENT_VC); loadnewfont(fd); return EXIT_SUCCESS; diff --git a/loadkmap.c b/loadkmap.c index dcb5c1caa..4f217d630 100644 --- a/loadkmap.c +++ b/loadkmap.c @@ -53,9 +53,9 @@ int loadkmap_main(int argc, char **argv) if (argc != 1) show_usage(); - fd = open("/dev/tty0", O_RDWR); + fd = open(CURRENT_VC, O_RDWR); if (fd < 0) - perror_msg_and_die("Error opening /dev/tty0"); + perror_msg_and_die("Error opening " CURRENT_VC); read(0, buff, 7); if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7)) diff --git a/more.c b/more.c index 6cdec729b..780cddf66 100644 --- a/more.c +++ b/more.c @@ -79,9 +79,9 @@ extern int more_main(int argc, char **argv) /* not use inputing from terminal if usage: more > outfile */ if(isatty(fileno(stdout))) { - cin = fopen("/dev/tty", "r"); + cin = fopen(CURRENT_TTY, "r"); if (!cin) - cin = xfopen("/dev/console", "r"); + cin = xfopen(CONSOLE_DEV, "r"); please_display_more_prompt = 0; #ifdef BB_FEATURE_USE_TERMIOS getTermSettings(fileno(cin), &initial_settings); diff --git a/util-linux/more.c b/util-linux/more.c index 6cdec729b..780cddf66 100644 --- a/util-linux/more.c +++ b/util-linux/more.c @@ -79,9 +79,9 @@ extern int more_main(int argc, char **argv) /* not use inputing from terminal if usage: more > outfile */ if(isatty(fileno(stdout))) { - cin = fopen("/dev/tty", "r"); + cin = fopen(CURRENT_TTY, "r"); if (!cin) - cin = xfopen("/dev/console", "r"); + cin = xfopen(CONSOLE_DEV, "r"); please_display_more_prompt = 0; #ifdef BB_FEATURE_USE_TERMIOS getTermSettings(fileno(cin), &initial_settings);