From 0ecb54a0f3fece5e42f089036f059973bed8d87e Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Sun, 5 Dec 1999 23:24:55 +0000 Subject: [PATCH] Stuf --- Changelog | 7 ++++++- busybox.def.h | 2 ++ init.c | 5 +++++ init/init.c | 5 +++++ mount.c | 5 ++++- mtab.c | 15 +++++++++++---- procps/ps.c | 3 +++ ps.c | 3 +++ sysklogd/syslogd.c | 31 ++++++------------------------- syslogd.c | 31 ++++++------------------------- util-linux/mount.c | 5 ++++- utility.c | 15 +++++++++++---- 12 files changed, 66 insertions(+), 61 deletions(-) diff --git a/Changelog b/Changelog index 378b698e3..668695f3c 100644 --- a/Changelog +++ b/Changelog @@ -8,7 +8,12 @@ was causing some confusing and unexpected behavior. * Added klogd to syslogd, so now the log will contain both system and kernel messages. - + * syslogd now creates the /dev/log socket to make sure it is there, and + is actually a socket with the right permissions. + * I've taken a first step to making busybox not need the /proc filesystem. + Most apps don't need it. Those that _require_ it, will complain + if you enable them when you disable BB_FEATURE_USE_PROCFS. + -Erik Andrsen 0.37 diff --git a/busybox.def.h b/busybox.def.h index bf8f54556..a1f55ffe6 100644 --- a/busybox.def.h +++ b/busybox.def.h @@ -74,6 +74,8 @@ // pretty/useful). // // +// enable features that use the /proc filesystem +#define BB_FEATURE_USE_PROCFS //Enable init being called as /linuxrc #define BB_FEATURE_LINUXRC // Use termios to manipulate the screen ('more' is prettier with this on) diff --git a/init.c b/init.c index 088a890cc..84b558d84 100644 --- a/init.c +++ b/init.c @@ -45,6 +45,11 @@ #include #endif +#if ! defined BB_FEATURE_USE_PROCFS +#error Sorry, I depend on the /proc filesystem right now. +#endif + + #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */ #define VT_SECONDARY "/dev/tty2" /* Virtual console */ #define VT_LOG "/dev/tty3" /* Virtual console */ diff --git a/init/init.c b/init/init.c index 088a890cc..84b558d84 100644 --- a/init/init.c +++ b/init/init.c @@ -45,6 +45,11 @@ #include #endif +#if ! defined BB_FEATURE_USE_PROCFS +#error Sorry, I depend on the /proc filesystem right now. +#endif + + #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */ #define VT_SECONDARY "/dev/tty2" /* Virtual console */ #define VT_LOG "/dev/tty3" /* Virtual console */ diff --git a/mount.c b/mount.c index a9463afba..1ec9cbb5b 100644 --- a/mount.c +++ b/mount.c @@ -163,6 +163,7 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, char buf[255]; +#if defined BB_FEATURE_USE_PROCFS if (strcmp(filesystemType, "auto") == 0) { FILE *f = fopen ("/proc/filesystems", "r"); @@ -189,7 +190,9 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, } } fclose (f); - } else { + } else +#endif + { status = do_mount (blockDevice, directory, filesystemType, flags | MS_MGC_VAL, string_flags, useMtab, fakeIt, mtab_opts); diff --git a/mtab.c b/mtab.c index e855717ce..98e42a383 100644 --- a/mtab.c +++ b/mtab.c @@ -26,8 +26,14 @@ erase_mtab(const char * name) FILE *mountTable = setmntent(mtab_file, "r"); struct mntent * m; - if ( mountTable == 0 - && (mountTable = setmntent("/proc/mounts", "r")) == 0 ) { + /* Check if reading the mtab file failed */ + if ( mountTable == 0 +#if ! defined BB_FEATURE_USE_PROCFS + ) { +#else + /* Bummer. fall back on trying the /proc filesystem */ + && (mountTable = setmntent("/proc/mounts", "r")) == 0 ) { +#endif perror(mtab_file); return; } @@ -76,13 +82,14 @@ write_mtab(char* blockDevice, char* directory, if ( length > 1 && directory[length - 1] == '/' ) directory[length - 1] = '\0'; +#ifdef BB_FEATURE_USE_PROCFS if ( filesystemType == 0 ) { - struct mntent * p - = findMountPoint(blockDevice, "/proc/mounts"); + struct mntent *p = findMountPoint(blockDevice, "/proc/mounts"); if ( p && p->mnt_type ) filesystemType = p->mnt_type; } +#endif m.mnt_fsname = blockDevice; m.mnt_dir = directory; m.mnt_type = filesystemType ? filesystemType : "default"; diff --git a/procps/ps.c b/procps/ps.c index 1f6175318..4496faa31 100644 --- a/procps/ps.c +++ b/procps/ps.c @@ -28,6 +28,9 @@ #include #include +#if ! defined BB_FEATURE_USE_PROCFS +#error Sorry, I depend on the /proc filesystem right now. +#endif typedef struct proc_s { char diff --git a/ps.c b/ps.c index 1f6175318..4496faa31 100644 --- a/ps.c +++ b/ps.c @@ -28,6 +28,9 @@ #include #include +#if ! defined BB_FEATURE_USE_PROCFS +#error Sorry, I depend on the /proc filesystem right now. +#endif typedef struct proc_s { char diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c index e3f45b62a..1f3e31225 100644 --- a/sysklogd/syslogd.c +++ b/sysklogd/syslogd.c @@ -57,13 +57,13 @@ static char LocalHostName[32]; static const char syslogd_usage[] = "syslogd [OPTION]...\n\n" - "Linux system logging utility.\n\n" + "Linux system and kernel (provides klogd) logging utility.\n" + "Note that this version of syslogd/klogd ignores /etc/syslog.conf.\n\n" "Options:\n" "\t-m\tChange the mark timestamp interval. default=20min. 0=off\n" "\t-n\tDo not fork into the background (for when run by init)\n" "\t-O\tSpecify an alternate log file. default=/var/log/messages\n"; -static int kmsg; /* try to open up the specified device */ static int device_open(char *device, int mode) @@ -253,10 +253,9 @@ static void doSyslogd(void) static void klogd_signal(int sig) { - //ksyslog(7, NULL, 0); - //ksyslog(0, 0, 0); + ksyslog(7, NULL, 0); + ksyslog(0, 0, 0); logMessage(LOG_SYSLOG|LOG_INFO, "Kernel log daemon exiting."); - close( kmsg); exit( TRUE); } @@ -264,7 +263,6 @@ static void klogd_signal(int sig) static void doKlogd(void) { int priority=LOG_INFO; - struct stat sb; char log_buffer[4096]; char *logp; @@ -277,26 +275,10 @@ static void doKlogd(void) "BusyBox v" BB_VER " (" BB_BT ")"); ksyslog(1, NULL, 0); - if ( ((stat(_PATH_KLOG, &sb) < 0) && (errno == ENOENT)) || - ( (kmsg = open(_PATH_KLOG, O_RDONLY)) < 0 ) ) { - char message[80]; - snprintf(message, 79, "klogd: Cannot open %s, " \ - "%d - %s.\n", _PATH_KLOG, errno, strerror(errno)); - logMessage(LOG_SYSLOG|LOG_ERR, message); - klogd_signal(0); - } + while (1) { + /* Use kernel syscalls */ memset(log_buffer, '\0', sizeof(log_buffer)); - if ( read(kmsg, log_buffer, sizeof(log_buffer)-1) < 0 ) { - char message[80]; - if ( errno == EINTR ) - continue; - snprintf(message, 79, "klogd: Cannot read proc file system: %d - %s.\n", - errno, strerror(errno)); - logMessage(LOG_SYSLOG|LOG_ERR, message); - klogd_signal(0); - } -#if 0 if ( ksyslog(2, log_buffer, sizeof(log_buffer)) < 0 ) { char message[80]; if ( errno == EINTR ) @@ -306,7 +288,6 @@ static void doKlogd(void) logMessage(LOG_SYSLOG|LOG_ERR, message); exit(1); } -#endif logp=log_buffer; if ( *log_buffer == '<' ) { diff --git a/syslogd.c b/syslogd.c index e3f45b62a..1f3e31225 100644 --- a/syslogd.c +++ b/syslogd.c @@ -57,13 +57,13 @@ static char LocalHostName[32]; static const char syslogd_usage[] = "syslogd [OPTION]...\n\n" - "Linux system logging utility.\n\n" + "Linux system and kernel (provides klogd) logging utility.\n" + "Note that this version of syslogd/klogd ignores /etc/syslog.conf.\n\n" "Options:\n" "\t-m\tChange the mark timestamp interval. default=20min. 0=off\n" "\t-n\tDo not fork into the background (for when run by init)\n" "\t-O\tSpecify an alternate log file. default=/var/log/messages\n"; -static int kmsg; /* try to open up the specified device */ static int device_open(char *device, int mode) @@ -253,10 +253,9 @@ static void doSyslogd(void) static void klogd_signal(int sig) { - //ksyslog(7, NULL, 0); - //ksyslog(0, 0, 0); + ksyslog(7, NULL, 0); + ksyslog(0, 0, 0); logMessage(LOG_SYSLOG|LOG_INFO, "Kernel log daemon exiting."); - close( kmsg); exit( TRUE); } @@ -264,7 +263,6 @@ static void klogd_signal(int sig) static void doKlogd(void) { int priority=LOG_INFO; - struct stat sb; char log_buffer[4096]; char *logp; @@ -277,26 +275,10 @@ static void doKlogd(void) "BusyBox v" BB_VER " (" BB_BT ")"); ksyslog(1, NULL, 0); - if ( ((stat(_PATH_KLOG, &sb) < 0) && (errno == ENOENT)) || - ( (kmsg = open(_PATH_KLOG, O_RDONLY)) < 0 ) ) { - char message[80]; - snprintf(message, 79, "klogd: Cannot open %s, " \ - "%d - %s.\n", _PATH_KLOG, errno, strerror(errno)); - logMessage(LOG_SYSLOG|LOG_ERR, message); - klogd_signal(0); - } + while (1) { + /* Use kernel syscalls */ memset(log_buffer, '\0', sizeof(log_buffer)); - if ( read(kmsg, log_buffer, sizeof(log_buffer)-1) < 0 ) { - char message[80]; - if ( errno == EINTR ) - continue; - snprintf(message, 79, "klogd: Cannot read proc file system: %d - %s.\n", - errno, strerror(errno)); - logMessage(LOG_SYSLOG|LOG_ERR, message); - klogd_signal(0); - } -#if 0 if ( ksyslog(2, log_buffer, sizeof(log_buffer)) < 0 ) { char message[80]; if ( errno == EINTR ) @@ -306,7 +288,6 @@ static void doKlogd(void) logMessage(LOG_SYSLOG|LOG_ERR, message); exit(1); } -#endif logp=log_buffer; if ( *log_buffer == '<' ) { diff --git a/util-linux/mount.c b/util-linux/mount.c index a9463afba..1ec9cbb5b 100644 --- a/util-linux/mount.c +++ b/util-linux/mount.c @@ -163,6 +163,7 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, char buf[255]; +#if defined BB_FEATURE_USE_PROCFS if (strcmp(filesystemType, "auto") == 0) { FILE *f = fopen ("/proc/filesystems", "r"); @@ -189,7 +190,9 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, } } fclose (f); - } else { + } else +#endif + { status = do_mount (blockDevice, directory, filesystemType, flags | MS_MGC_VAL, string_flags, useMtab, fakeIt, mtab_opts); diff --git a/utility.c b/utility.c index a38ef86fb..81bff18e7 100644 --- a/utility.c +++ b/utility.c @@ -36,12 +36,16 @@ #include #include -#ifdef BB_MTAB -const char mtab_file[] = "/etc/mtab"; -#else #if defined BB_MOUNT || defined BB_UMOUNT || defined BB_DF +# if defined BB_FEATURE_USE_PROCFS const char mtab_file[] = "/proc/mounts"; -#endif +# else +# if defined BB_MTAB +const char mtab_file[] = "/etc/mtab"; +# else +# error With (BB_MOUNT||BB_UMOUNT||BB_DF) defined, you must define either BB_MTAB or BB_FEATURE_USE_PROCFS +# endif +# endif #endif @@ -56,6 +60,9 @@ extern void usage(const char *usage) #if defined (BB_INIT) || defined (BB_PS) +#if ! defined BB_FEATURE_USE_PROCFS +#error Sorry, I depend on the /proc filesystem right now. +#endif /* Returns kernel version encoded as major*65536 + minor*256 + patch, * so, for example, to check if the kernel is greater than 2.2.11: * if (get_kernel_revision() <= 2*65536+2*256+11) { } -- 2.25.1