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sssd.20906
0006-Rotate-child-log-files.patch
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File 0006-Rotate-child-log-files.patch of Package sssd.20906
From 57406881fe6efd0369d07429ce48afe254a94bf7 Mon Sep 17 00:00:00 2001 From: Josef Cejka <jcejka@suse.com> Date: Mon, 24 Dec 2018 10:32:14 +0100 Subject: [PATCH] Rotate child log files Registers child debug file descriptors of all loaded modules and rotate them on SIGHUP. --- src/providers/ad/ad_gpo.c | 11 ++++---- src/providers/ipa/ipa_selinux.c | 9 ++++--- src/providers/krb5/krb5_child_handler.c | 2 +- src/providers/krb5/krb5_common.h | 3 ++- src/providers/krb5/krb5_init_shared.c | 6 ++--- src/providers/ldap/ldap_common.c | 5 +++- src/providers/ldap/ldap_common.h | 2 +- src/providers/ldap/sdap_child_helpers.c | 4 +-- src/responder/pam/pamsrv.c | 1 - src/responder/pam/pamsrv.h | 3 ++- src/responder/pam/pamsrv_cmd.c | 2 +- src/responder/pam/pamsrv_p11.c | 4 ++- src/util/child_common.c | 22 +++++++++++----- src/util/child_common.h | 12 ++++++++- src/util/debug.c | 17 ++++++++---- src/util/server.c | 35 +++++++++++++++++++++++++ src/util/util.h | 1 + 17 files changed, 105 insertions(+), 34 deletions(-) diff --git a/src/providers/ad/ad_gpo.c b/src/providers/ad/ad_gpo.c index d9ea31141..877ea994b 100644 --- a/src/providers/ad/ad_gpo.c +++ b/src/providers/ad/ad_gpo.c @@ -104,7 +104,10 @@ #endif /* fd used by the gpo_child process for logging */ -int gpo_child_debug_fd = -1; +struct child_debug gpo_child_debug = { + .fd = -1, + .filename = "gpo_child" +}; /* == common data structures and declarations ============================= */ @@ -1419,11 +1422,9 @@ ad_gpo_access_check(TALLOC_CTX *mem_ctx, return ret; } -#define GPO_CHILD_LOG_FILE "gpo_child" - static errno_t gpo_child_init(void) { - return child_debug_init(GPO_CHILD_LOG_FILE, &gpo_child_debug_fd); + return child_debug_init(&gpo_child_debug); } /* @@ -4287,7 +4288,7 @@ gpo_fork_child(struct tevent_req *req) if (pid == 0) { /* child */ exec_child_ex(state, pipefd_to_child, pipefd_from_child, - GPO_CHILD, gpo_child_debug_fd, NULL, false, + GPO_CHILD, gpo_child_debug.fd, NULL, false, STDIN_FILENO, AD_GPO_CHILD_OUT_FILENO); /* We should never get here */ diff --git a/src/providers/ipa/ipa_selinux.c b/src/providers/ipa/ipa_selinux.c index 630f68ad5..4f3f54f1a 100644 --- a/src/providers/ipa/ipa_selinux.c +++ b/src/providers/ipa/ipa_selinux.c @@ -52,7 +52,10 @@ #include <selinux/selinux.h> /* fd used by the selinux_child process for logging */ -int selinux_child_debug_fd = -1; +struct child_debug selinux_child_debug = { + .fd = -1, + .filename = SELINUX_CHILD_LOG_FILE +}; static struct tevent_req * ipa_get_selinux_send(TALLOC_CTX *mem_ctx, @@ -640,7 +643,7 @@ immediately: static errno_t selinux_child_init(void) { - return child_debug_init(SELINUX_CHILD_LOG_FILE, &selinux_child_debug_fd); + return child_debug_init(&selinux_child_debug); } static errno_t selinux_child_create_buffer(struct selinux_child_state *state) @@ -712,7 +715,7 @@ static errno_t selinux_fork_child(struct selinux_child_state *state) if (pid == 0) { /* child */ exec_child(state, pipefd_to_child, pipefd_from_child, - SELINUX_CHILD, selinux_child_debug_fd); + SELINUX_CHILD, selinux_child_debug.fd); DEBUG(SSSDBG_CRIT_FAILURE, "Could not exec selinux_child: [%d][%s].\n", ret, sss_strerror(ret)); return ret; diff --git a/src/providers/krb5/krb5_child_handler.c b/src/providers/krb5/krb5_child_handler.c index 352ff980d..3f5437656 100644 --- a/src/providers/krb5/krb5_child_handler.c +++ b/src/providers/krb5/krb5_child_handler.c @@ -461,7 +461,7 @@ static errno_t fork_child(struct tevent_req *req) if (pid == 0) { /* child */ exec_child_ex(state, pipefd_to_child, pipefd_from_child, - KRB5_CHILD, state->kr->krb5_ctx->child_debug_fd, + KRB5_CHILD, state->kr->krb5_ctx->child_debug.fd, krb5_child_extra_args, false, STDIN_FILENO, STDOUT_FILENO); diff --git a/src/providers/krb5/krb5_common.h b/src/providers/krb5/krb5_common.h index 48368a528..3e7b62422 100644 --- a/src/providers/krb5/krb5_common.h +++ b/src/providers/krb5/krb5_common.h @@ -31,6 +31,7 @@ #include "providers/backend.h" #include "util/util.h" +#include "util/child_common.h" #include "util/sss_krb5.h" #define KDCINFO_TMPL PUBCONF_PATH"/kdcinfo.%s" @@ -117,7 +118,7 @@ struct krb5_ctx { struct dp_option *opts; struct krb5_service *service; struct krb5_service *kpasswd_service; - int child_debug_fd; + struct child_debug child_debug; pcre *illegal_path_re; diff --git a/src/providers/krb5/krb5_init_shared.c b/src/providers/krb5/krb5_init_shared.c index 3901b7272..92f722deb 100644 --- a/src/providers/krb5/krb5_init_shared.c +++ b/src/providers/krb5/krb5_init_shared.c @@ -83,9 +83,9 @@ errno_t krb5_child_init(struct krb5_ctx *krb5_auth_ctx, goto done; } - krb5_auth_ctx->child_debug_fd = -1; /* -1 means not initialized */ - ret = child_debug_init(KRB5_CHILD_LOG_FILE, - &krb5_auth_ctx->child_debug_fd); + krb5_auth_ctx->child_debug.fd = -1; /* -1 means not initialized */ + krb5_auth_ctx->child_debug.filename = KRB5_CHILD_LOG_FILE; + ret = child_debug_init(&krb5_auth_ctx->child_debug); if (ret != EOK) { DEBUG(SSSDBG_OP_FAILURE, "Could not set krb5_child debugging!\n"); goto done; diff --git a/src/providers/ldap/ldap_common.c b/src/providers/ldap/ldap_common.c index 91e229243..70c5429e8 100644 --- a/src/providers/ldap/ldap_common.c +++ b/src/providers/ldap/ldap_common.c @@ -38,7 +38,10 @@ #include "providers/ldap/sdap_idmap.h" /* a fd the child process would log into */ -int ldap_child_debug_fd = -1; +struct child_debug ldap_child_debug = { + .fd = -1, + .filename = LDAP_CHILD_LOG_FILE +}; int ldap_id_setup_tasks(struct sdap_id_ctx *ctx) { diff --git a/src/providers/ldap/ldap_common.h b/src/providers/ldap/ldap_common.h index 44dbc3fb0..288d72673 100644 --- a/src/providers/ldap/ldap_common.h +++ b/src/providers/ldap/ldap_common.h @@ -43,7 +43,7 @@ #define LDAP_ALLOWED_WILDCARDS "*" /* a fd the child process would log into */ -extern int ldap_child_debug_fd; +extern struct child_debug ldap_child_debug; struct sdap_id_ctx; diff --git a/src/providers/ldap/sdap_child_helpers.c b/src/providers/ldap/sdap_child_helpers.c index a03d28c9c..69a9c9e0b 100644 --- a/src/providers/ldap/sdap_child_helpers.c +++ b/src/providers/ldap/sdap_child_helpers.c @@ -111,7 +111,7 @@ static errno_t sdap_fork_child(struct tevent_context *ev, if (pid == 0) { /* child */ exec_child(child, pipefd_to_child, pipefd_from_child, - LDAP_CHILD, ldap_child_debug_fd); + LDAP_CHILD, ldap_child_debug.fd); /* We should never get here */ DEBUG(SSSDBG_CRIT_FAILURE, "BUG: Could not exec LDAP child\n"); @@ -518,5 +518,5 @@ static errno_t set_tgt_child_timeout(struct tevent_req *req, /* Setup child logging */ int sdap_setup_child(void) { - return child_debug_init(LDAP_CHILD_LOG_FILE, &ldap_child_debug_fd); + return child_debug_init(&ldap_child_debug); } diff --git a/src/responder/pam/pamsrv.c b/src/responder/pam/pamsrv.c index 5791686b9..86d04e400 100644 --- a/src/responder/pam/pamsrv.c +++ b/src/responder/pam/pamsrv.c @@ -321,7 +321,6 @@ static int pam_process_init(TALLOC_CTX *mem_ctx, goto done; } - pctx->p11_child_debug_fd = -1; if (pctx->cert_auth) { ret = p11_child_init(pctx); if (ret != EOK) { diff --git a/src/responder/pam/pamsrv.h b/src/responder/pam/pamsrv.h index dfd982178..f53082f83 100644 --- a/src/responder/pam/pamsrv.h +++ b/src/responder/pam/pamsrv.h @@ -24,6 +24,7 @@ #include <security/pam_appl.h> #include "util/util.h" +#include "util/child_common.h" #include "sbus/sssd_dbus.h" #include "responder/common/responder.h" #include "responder/common/cache_req/cache_req.h" @@ -48,7 +49,7 @@ struct pam_ctx { char **app_services; bool cert_auth; - int p11_child_debug_fd; + struct child_debug p11_child_debug; char *nss_db; struct sss_certmap_ctx *sss_certmap_ctx; }; diff --git a/src/responder/pam/pamsrv_cmd.c b/src/responder/pam/pamsrv_cmd.c index 8610b6b80..e1ff8e8c7 100644 --- a/src/responder/pam/pamsrv_cmd.c +++ b/src/responder/pam/pamsrv_cmd.c @@ -1334,7 +1334,7 @@ static errno_t check_cert(TALLOC_CTX *mctx, return ret; } - req = pam_check_cert_send(mctx, ev, pctx->p11_child_debug_fd, + req = pam_check_cert_send(mctx, ev, pctx->p11_child_debug.fd, pctx->nss_db, p11_child_timeout, cert_verification_opts, pctx->sss_certmap_ctx, pd); diff --git a/src/responder/pam/pamsrv_p11.c b/src/responder/pam/pamsrv_p11.c index 0c9822fe9..b6f4ba4ad 100644 --- a/src/responder/pam/pamsrv_p11.c +++ b/src/responder/pam/pamsrv_p11.c @@ -227,7 +227,9 @@ errno_t p11_child_init(struct pam_ctx *pctx) return ret; } - return child_debug_init(P11_CHILD_LOG_FILE, &pctx->p11_child_debug_fd); + pctx->p11_child_debug.filename = P11_CHILD_LOG_FILE; + pctx->p11_child_debug.fd = -1; + return child_debug_init(&pctx->p11_child_debug); } bool may_do_cert_auth(struct pam_ctx *pctx, struct pam_data *pd) diff --git a/src/util/child_common.c b/src/util/child_common.c index 203c115f9..3420d6ad2 100644 --- a/src/util/child_common.c +++ b/src/util/child_common.c @@ -47,6 +47,8 @@ struct sss_child_ctx { struct sss_sigchild_ctx *sigchld_ctx; }; +struct child_debug *child_debug_list = NULL; + static void sss_child_handler(struct tevent_context *ev, struct tevent_signal *se, int signum, @@ -803,30 +805,36 @@ int child_io_destructor(void *ptr) return EOK; } -errno_t child_debug_init(const char *logfile, int *debug_fd) +errno_t child_debug_init(struct child_debug *cd) { int ret; - FILE *debug_filep; - if (debug_fd == NULL) { + if (cd == NULL) { return EOK; } - if (sss_logger == FILES_LOGGER && *debug_fd == -1) { - ret = open_debug_file_ex(logfile, &debug_filep, false); + if (sss_logger == FILES_LOGGER && cd->fd == -1) { + cd->filep = NULL; + cd->prev = NULL; + cd->next = NULL; + ret = open_debug_file_ex(cd->filename, &cd->filep, false); if (ret != EOK) { DEBUG(SSSDBG_FATAL_FAILURE, "Error setting up logging (%d) [%s]\n", ret, sss_strerror(ret)); return ret; } - *debug_fd = fileno(debug_filep); - if (*debug_fd == -1) { + cd->fd = fileno(cd->filep); + if (cd->fd == -1) { DEBUG(SSSDBG_FATAL_FAILURE, "fileno failed [%d][%s]\n", errno, strerror(errno)); ret = errno; + fclose(cd->filep); + cd->filep = NULL; return ret; } + + DLIST_ADD(child_debug_list, cd); } return EOK; diff --git a/src/util/child_common.h b/src/util/child_common.h index 37116e2a7..cddc7161b 100644 --- a/src/util/child_common.h +++ b/src/util/child_common.h @@ -53,6 +53,16 @@ struct child_io_fds { int write_to_child_fd; }; +struct child_debug { + const char *filename; + int fd; + FILE *filep; + struct child_debug *prev; + struct child_debug *next; +}; + +extern struct child_debug *child_debug_list; + /* COMMON SIGCHLD HANDLING */ typedef void (*sss_child_fn_t)(int pid, int wait_status, void *pvt); @@ -119,6 +129,6 @@ void exec_child(TALLOC_CTX *mem_ctx, int child_io_destructor(void *ptr); -errno_t child_debug_init(const char *logfile, int *debug_fd); +errno_t child_debug_init(struct child_debug *child_debug); #endif /* __CHILD_COMMON_H__ */ diff --git a/src/util/debug.c b/src/util/debug.c index 30801fce7..001445e5a 100644 --- a/src/util/debug.c +++ b/src/util/debug.c @@ -465,16 +465,18 @@ int open_debug_file(void) return open_debug_file_ex(NULL, NULL, true); } -int rotate_debug_files(void) +int rotate_debug_file(const char *filename, FILE **filep) { int ret; errno_t error; if (sss_logger != FILES_LOGGER) return EOK; + if (filep == NULL) return EOK; + do { error = 0; - ret = fclose(debug_file); + ret = fclose(*filep); if (ret != 0) { error = errno; } @@ -494,14 +496,19 @@ int rotate_debug_files(void) * leak and then proceed with opening the new file. */ sss_log(SSS_LOG_ALERT, "Could not close debug file [%s]. [%d][%s]\n", - debug_log_file, error, strerror(error)); + filename, error, strerror(error)); sss_log(SSS_LOG_ALERT, "Attempting to open new file anyway. " "Be aware that this is a resource leak\n"); } - debug_file = NULL; + *filep = NULL; + + return open_debug_file_ex(filename, filep, false); +} - return open_debug_file(); +int rotate_debug_files(void) +{ + return rotate_debug_file(debug_log_file, &debug_file); } void talloc_log_fn(const char *message) diff --git a/src/util/server.c b/src/util/server.c index 62e09314c..8bd07b810 100644 --- a/src/util/server.c +++ b/src/util/server.c @@ -31,6 +31,7 @@ #include <signal.h> #include <ldb.h> #include "util/util.h" +#include "util/child_common.h" #include "confdb/confdb.h" #include "monitor/monitor_interfaces.h" @@ -384,6 +385,33 @@ static void te_server_hup(struct tevent_context *ev, } } +static int rotate_child_debug_files(void) +{ + struct child_debug *cd; + int ret; + int final_ret = EOK; + + DLIST_FOR_EACH(cd, child_debug_list) { + ret = rotate_debug_file(cd->filename, &cd->filep); + if (ret == EOK) { + cd->fd = fileno(cd->filep); + if (cd->fd != -1) continue; + + DEBUG(SSSDBG_FATAL_FAILURE, + "fileno failed [%d][%s]\n", errno, strerror(errno)); + ret = errno; + fclose(cd->filep); + cd->filep = NULL; + } + /* save the first error and try to rotate remaining files */ + if (final_ret == EOK) { + final_ret = ret; + } + } + + return final_ret; +} + errno_t server_common_rotate_logs(struct confdb_ctx *confdb, const char *conf_path) { @@ -397,6 +425,13 @@ errno_t server_common_rotate_logs(struct confdb_ctx *confdb, return ret; } + ret = rotate_child_debug_files(); + if (ret) { + sss_log(SSS_LOG_ALERT, "Could not rotate child debug files! [%d][%s]\n", + ret, strerror(ret)); + return ret; + } + /* Get new debug level from the confdb */ ret = confdb_get_int(confdb, conf_path, CONFDB_SERVICE_DEBUG_LEVEL, diff --git a/src/util/util.h b/src/util/util.h index ef8ef7f57..78ab02dce 100644 --- a/src/util/util.h +++ b/src/util/util.h @@ -151,6 +151,7 @@ int chown_debug_file(const char *filename, uid_t uid, gid_t gid); int open_debug_file_ex(const char *filename, FILE **filep, bool want_cloexec); int open_debug_file(void); int rotate_debug_files(void); +int rotate_debug_file(const char *filename, FILE **filep); void talloc_log_fn(const char *msg); /* From sss_log.c */ -- 2.21.0
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