Attachment 310353 Details for Bug 452957 – RHEL5 strace crond -n output

RHEL5 strace crond -n output

RHEL5-glibc-cron.txt (text/plain), 5.72 KB, created by Subhendu Ghosh on 2008-06-26 17:52:44 UTC

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Creator: Subhendu Ghosh

Created: 2008-06-26 17:52:44 UTC

Size: 5.72 KB

patch

obsolete

>RHEL 5
>rpm -q vixie-cron glibc glibc-common
>vixie-cron-4.1-72.el5
>glibc-2.5-24
>glibc-common-2.5-24
>
>Note: on wake up from nanosleep no stat("/etc/localtime")
>
>
>strace crond -n
>...
>open("cron", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 2 entries */, 4096)      = 48
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>open("/etc/localtime", O_RDONLY)        = 4
>fstat(4, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0
>fstat(4, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaf27a000
>read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0\0\0\0"..., 4096) = 3519
>lseek(4, -2252, SEEK_CUR)               = 1267
>read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\5\0\0\0\5\0\0\0\0"..., 4096) = 2252
>close(4)                                = 0
>munmap(0x2aaaaf27a000, 4096)            = 0
>rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
>rt_sigaction(SIGCHLD, NULL, {0x555555557450, [], SA_RESTORER|SA_RESTART, 0x2aaaab5331b0}, 8) = 0
>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
>nanosleep({36, 0}, 0x7fff8cd77560)      = ? ERESTART_RESTARTBLOCK (To be restarted)
>--- SIGWINCH (Window changed) @ 0 (0) ---
>restart_syscall(<... resuming interrupted call ...>) = 0
>stat("cron", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("cron", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 2 entries */, 4096)      = 48
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/cron.d", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("/etc/cron.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 2 entries */, 4096)      = 48
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/cron.d", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("/etc/cron.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 4 entries */, 4096)      = 128
>stat("/etc/cron.d/sysstat", {st_mode=S_IFREG|0644, st_size=192, ...}) = 0
>stat("/etc/cron.d/rhn-virtualization.cron", {st_mode=S_IFREG|0644, st_size=67, ...}) = 0
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/crontab", {st_mode=S_IFREG|0644, st_size=255, ...}) = 0
>rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
>rt_sigaction(SIGCHLD, NULL, {0x555555557450, [], SA_RESTORER|SA_RESTART, 0x2aaaab5331b0}, 8) = 0
>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
>nanosleep({60, 0}, {60, 0})             = 0
>stat("cron", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("cron", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 2 entries */, 4096)      = 48
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/cron.d", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("/etc/cron.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 4 entries */, 4096)      = 128
>stat("/etc/cron.d/sysstat", {st_mode=S_IFREG|0644, st_size=192, ...}) = 0
>stat("/etc/cron.d/rhn-virtualization.cron", {st_mode=S_IFREG|0644, st_size=67, ...}) = 0
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/crontab", {st_mode=S_IFREG|0644, st_size=255, ...}) = 0
>clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x2aaaabca1bc0) = 1180
>rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
>rt_sigaction(SIGCHLD, NULL, {0x555555557450, [], SA_RESTORER|SA_RESTART, 0x2aaaab5331b0}, 8) = 0
>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
>nanosleep({60, 0}, 0x7fff8cd77560)      = ? ERESTART_RESTARTBLOCK (To be restarted)
>--- SIGCHLD (Child exited) @ 0 (0) ---
>rt_sigreturn(0x11)                      = -1 EINTR (Interrupted system call)
>wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 1180
>wait4(-1, 0x7fff8cd7757c, WNOHANG, NULL) = -1 ECHILD (No child processes)
>rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
>rt_sigaction(SIGCHLD, NULL, {0x555555557450, [], SA_RESTORER|SA_RESTART, 0x2aaaab5331b0}, 8) = 0
>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
>nanosleep({60, 0}, ^[[B{60, 0})             = 0
>stat("cron", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("cron", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 2 entries */, 4096)      = 48
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/cron.d", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>open("/etc/cron.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 4
>fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
>fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
>getdents(4, /* 4 entries */, 4096)      = 128
>stat("/etc/cron.d/sysstat", {st_mode=S_IFREG|0644, st_size=192, ...}) = 0
>stat("/etc/cron.d/rhn-virtualization.cron", {st_mode=S_IFREG|0644, st_size=67, ...}) = 0
>getdents(4, /* 0 entries */, 4096)      = 0
>close(4)                                = 0
>stat("/etc/crontab", {st_mode=S_IFREG|0644, st_size=255, ...}) = 0
>rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
>rt_sigaction(SIGCHLD, NULL, {0x555555557450, [], SA_RESTORER|SA_RESTART, 0x2aaaab5331b0}, 8) = 0
>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
>nanosleep({60, 0},

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