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-rw-r--r--Makefile.am7
-rw-r--r--src/krb5_plugin/sssd_krb5_locator_plugin.c22
-rw-r--r--src/monitor/monitor.c41
-rw-r--r--src/monitor/monitor_netlink.c20
-rw-r--r--src/providers/krb5/krb5_child.c51
-rw-r--r--src/providers/krb5/krb5_common.c26
-rw-r--r--src/providers/ldap/ldap_child.c53
-rw-r--r--src/responder/nss/nsssrv_mmap_cache.c20
-rw-r--r--src/responder/ssh/sshsrv_cmd.c2
-rw-r--r--src/sss_client/pam_sss.c50
-rw-r--r--src/sss_client/ssh/sss_ssh_knownhostsproxy.c4
-rw-r--r--src/tools/files.c51
-rw-r--r--src/util/backup_file.c44
-rw-r--r--src/util/child_common.c53
-rw-r--r--src/util/find_uid.c16
-rw-r--r--src/util/server.c96
16 files changed, 242 insertions, 314 deletions
diff --git a/Makefile.am b/Makefile.am
index 919fb9b2..8293c08e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -777,6 +777,7 @@ endif
files_tests_SOURCES = \
src/tests/files-tests.c \
src/util/check_and_open.c \
+ src/util/atomic_io.c \
src/tools/selinux.c \
src/tools/files.c
files_tests_CFLAGS = \
@@ -835,6 +836,7 @@ fail_over_tests_LDADD = \
find_uid_tests_SOURCES = \
src/tests/find_uid-tests.c \
src/util/find_uid.c \
+ src/util/atomic_io.c \
src/util/strtonum.c
find_uid_tests_CFLAGS = \
$(AM_CFLAGS) \
@@ -1225,6 +1227,7 @@ krb5_child_SOURCES = \
src/providers/dp_pam_data_util.c \
src/util/user_info_msg.c \
src/util/sss_krb5.c \
+ src/util/atomic_io.c \
src/util/util.c \
src/util/signal.c
krb5_child_CFLAGS = \
@@ -1243,6 +1246,7 @@ krb5_child_LDADD = \
ldap_child_SOURCES = \
src/providers/ldap/ldap_child.c \
src/util/sss_krb5.c \
+ src/util/atomic_io.c \
src/util/util.c \
src/util/signal.c
ldap_child_CFLAGS = \
@@ -1284,7 +1288,8 @@ memberof_la_LDFLAGS = \
if BUILD_KRB5_LOCATOR_PLUGIN
sssd_krb5_locator_plugin_la_SOURCES = \
- src/krb5_plugin/sssd_krb5_locator_plugin.c
+ src/krb5_plugin/sssd_krb5_locator_plugin.c \
+ src/util/atomic_io.c
sssd_krb5_locator_plugin_la_CFLAGS = \
$(AM_CFLAGS) \
$(KRB5_CFLAGS)
diff --git a/src/krb5_plugin/sssd_krb5_locator_plugin.c b/src/krb5_plugin/sssd_krb5_locator_plugin.c
index 3eced04d..b8d4e31b 100644
--- a/src/krb5_plugin/sssd_krb5_locator_plugin.c
+++ b/src/krb5_plugin/sssd_krb5_locator_plugin.c
@@ -86,7 +86,6 @@ static int get_krb5info(const char *realm, struct sssd_ctx *ctx,
char *krb5info_name = NULL;
size_t len;
uint8_t buf[BUFSIZE + 1];
- uint8_t *p;
int fd = -1;
const char *name_tmpl = NULL;
char *port_str;
@@ -129,23 +128,19 @@ static int get_krb5info(const char *realm, struct sssd_ctx *ctx,
goto done;
}
- len = BUFSIZE;
- p = buf;
memset(buf, 0, BUFSIZE+1);
- while (len != 0 && (ret = read(fd, p, len)) != 0) {
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) continue;
- PLUGIN_DEBUG(("read failed [%d][%s].\n", errno, strerror(errno)));
- close(fd);
- goto done;
- }
- len -= ret;
- p += ret;
+ errno = 0;
+ len = sss_atomic_read_s(fd, buf, BUFSIZE);
+ if (len == -1) {
+ ret = errno;
+ PLUGIN_DEBUG(("read failed [%d][%s].\n", ret, strerror(ret)));
+ close(fd);
+ goto done;
}
close(fd);
- if (len == 0) {
+ if (len == BUFSIZE) {
PLUGIN_DEBUG(("Content of krb5info file [%s] is [%d] or larger.\n",
krb5info_name, BUFSIZE));
}
@@ -212,6 +207,7 @@ static int get_krb5info(const char *realm, struct sssd_ctx *ctx,
goto done;
}
+ ret = 0;
done:
free(krb5info_name);
return ret;
diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c
index cadc27fe..041f576e 100644
--- a/src/monitor/monitor.c
+++ b/src/monitor/monitor.c
@@ -1498,11 +1498,12 @@ static void process_config_file(struct tevent_context *ev,
struct inotify_event *in_event;
char *buf;
char *name;
- ssize_t len, total_len;
+ ssize_t len;
ssize_t event_size;
struct config_file_ctx *file_ctx;
struct config_file_callback *cb;
struct rewatch_ctx *rw_ctx;
+ errno_t ret;
event_size = sizeof(struct inotify_event);
file_ctx = talloc_get_type(ptr, struct config_file_ctx);
@@ -1517,16 +1518,14 @@ static void process_config_file(struct tevent_context *ev,
goto done;
}
- total_len = 0;
- while (total_len < event_size) {
- len = read(file_ctx->mt_ctx->inotify_fd, buf+total_len,
- event_size-total_len);
- if (len == -1) {
- if (errno == EINTR || errno == EAGAIN) continue;
- DEBUG(0, ("Critical error reading inotify file descriptor.\n"));
- goto done;
- }
- total_len += len;
+ errno = 0;
+ len = sss_atomic_read_s(file_ctx->mt_ctx->inotify_fd, buf, event_size);
+ if (len == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Critical error reading inotify file descriptor [%d]: %s\n",
+ ret, strerror(ret)));
+ goto done;
}
in_event = (struct inotify_event *)buf;
@@ -1535,19 +1534,19 @@ static void process_config_file(struct tevent_context *ev,
/* Read in the name, even though we don't use it,
* so that read ptr is in the right place
*/
- name = talloc_size(tmp_ctx, len);
+ name = talloc_size(tmp_ctx, in_event->len);
if (!name) {
goto done;
}
- total_len = 0;
- while (total_len < in_event->len) {
- len = read(file_ctx->mt_ctx->inotify_fd, &name, in_event->len);
- if (len == -1) {
- if (errno == EINTR || errno == EAGAIN) continue;
- DEBUG(0, ("Critical error reading inotify file descriptor.\n"));
- goto done;
- }
- total_len += len;
+
+ errno = 0;
+ len = sss_atomic_read_s(file_ctx->mt_ctx->inotify_fd, name, in_event->len);
+ if (len == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Critical error reading inotify file descriptor [%d]: %s\n",
+ ret, strerror(ret)));
+ goto done;
}
}
diff --git a/src/monitor/monitor_netlink.c b/src/monitor/monitor_netlink.c
index 2fe380ac..3842c4f1 100644
--- a/src/monitor/monitor_netlink.c
+++ b/src/monitor/monitor_netlink.c
@@ -153,19 +153,17 @@ static bool has_ethernet_encapsulation(const char *sysfs_path)
}
memset(buf, 0, BUFSIZE);
- while ((ret = read(fd, buf, BUFSIZE)) != 0) {
- if (ret == -1) {
- ret = errno;
- if (ret == EINTR || ret == EAGAIN) {
- continue;
- }
- DEBUG(SSSDBG_OP_FAILURE,
- ("read failed [%d][%s].\n", ret, strerror(ret)));
- close(fd);
- return false;
- }
+ errno = 0;
+ ret = sss_atomic_read_s(fd, buf, BUFSIZE);
+ if (ret == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_OP_FAILURE,
+ ("read failed [%d][%s].\n", ret, strerror(ret)));
+ close(fd);
+ return false;
}
close(fd);
+ buf[BUFSIZE-1] = '\0';
return strncmp(buf, "1\n", BUFSIZE) == 0;
}
diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
index 209643a0..cc29c00f 100644
--- a/src/providers/krb5/krb5_child.c
+++ b/src/providers/krb5/krb5_child.c
@@ -461,18 +461,20 @@ static errno_t sendresponse(int fd, krb5_error_code kerr, int pam_status,
return ENOMEM;
}
- written = 0;
- while (written < resp->size) {
- ret = write(fd, resp->buf + written, resp->size - written);
- if (ret == -1) {
- if (errno == EAGAIN || errno == EINTR) {
- continue;
- }
- ret = errno;
- DEBUG(1, ("write failed [%d][%s].\n", ret, strerror(ret)));
- return ret;
- }
- written += ret;
+ errno = 0;
+ written = sss_atomic_write_s(fd, resp->buf, resp->size);
+ if (written == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("write failed [%d][%s].\n", ret, strerror(ret)));
+ return ret;
+ }
+
+ if (written != resp->size) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Write error, wrote [%d] bytes, expected [%d]\n",
+ written, resp->size));
+ return EOK;
}
return EOK;
@@ -1631,25 +1633,14 @@ int main(int argc, const char *argv[])
goto fail;
}
- while ((ret = read(STDIN_FILENO, buf + len, IN_BUF_SIZE - len)) != 0) {
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) {
- continue;
- }
- DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
- goto fail;
- } else if (ret > 0) {
- len += ret;
- if (len > IN_BUF_SIZE) {
- DEBUG(1, ("read too much, this should never happen.\n"));
- goto fail;
- }
- continue;
- } else {
- DEBUG(1, ("unexpected return code of read [%d].\n", ret));
- goto fail;
- }
+ errno = 0;
+ len = sss_atomic_read_s(STDIN_FILENO, buf, IN_BUF_SIZE);
+ if (len == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE, ("read failed [%d][%s].\n", ret, strerror(ret)));
+ goto fail;
}
+
close(STDIN_FILENO);
kr = talloc_zero(pd, struct krb5_req);
diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index d33900f1..022745d6 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -321,25 +321,19 @@ errno_t write_krb5info_file(const char *realm, const char *server,
goto done;
}
- written = 0;
- while (written < server_len) {
- ret = write(fd, server+written, server_len-written);
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) {
- continue;
- }
- ret = errno;
- DEBUG(1, ("write failed [%d][%s].\n", ret, strerror(ret)));
- goto done;
- }
- else {
- written += ret;
- }
+ errno = 0;
+ written = sss_atomic_write_s(fd, discard_const(server), server_len);
+ if (written == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("write failed [%d][%s].\n", ret, strerror(ret)));
+ goto done;
}
if (written != server_len) {
- DEBUG(1, ("Write error, wrote [%d] bytes, expected [%d]\n",
- written, server_len));
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Write error, wrote [%d] bytes, expected [%d]\n",
+ written, server_len));
ret = EIO;
goto done;
}
diff --git a/src/providers/ldap/ldap_child.c b/src/providers/ldap/ldap_child.c
index e66406c0..5356f883 100644
--- a/src/providers/ldap/ldap_child.c
+++ b/src/providers/ldap/ldap_child.c
@@ -446,25 +446,14 @@ int main(int argc, const char *argv[])
goto fail;
}
- while ((ret = read(STDIN_FILENO, buf + len, IN_BUF_SIZE - len)) != 0) {
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) {
- continue;
- }
- DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
- goto fail;
- } else if (ret > 0) {
- len += ret;
- if (len > IN_BUF_SIZE) {
- DEBUG(1, ("read too much, this should never happen.\n"));
- goto fail;
- }
- continue;
- } else {
- DEBUG(1, ("unexpected return code of read [%d].\n", ret));
- goto fail;
- }
+ errno = 0;
+ len = sss_atomic_read_s(STDIN_FILENO, buf, IN_BUF_SIZE);
+ if (len == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE, ("read failed [%d][%s].\n", ret, strerror(ret)));
+ goto fail;
}
+
close(STDIN_FILENO);
ret = unpack_buffer(buf, len, ibuf);
@@ -484,22 +473,22 @@ int main(int argc, const char *argv[])
ret = prepare_response(main_ctx, ccname, expire_time, kerr, &resp);
if (ret != EOK) {
- DEBUG(1, ("prepare_response failed. [%d][%s].\n", ret, strerror(ret)));
- return ENOMEM;
+ DEBUG(SSSDBG_CRIT_FAILURE, ("prepare_response failed. [%d][%s].\n", ret, strerror(ret)));
+ goto fail;
}
- written = 0;
- while (written < resp->size) {
- ret = write(STDOUT_FILENO, resp->buf + written, resp->size - written);
- if (ret == -1) {
- if (errno == EAGAIN || errno == EINTR) {
- continue;
- }
- ret = errno;
- DEBUG(1, ("write failed [%d][%s].\n", ret, strerror(ret)));
- return ret;
- }
- written += ret;
+ errno = 0;
+ written = sss_atomic_write_s(STDOUT_FILENO, resp->buf, resp->size);
+ if (written == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE, ("write failed [%d][%s].\n", ret, strerror(ret)));
+ goto fail;
+ }
+
+ if (written != resp->size) {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Expected to write %d bytes, wrote %d\n",
+ resp->size, written));
+ goto fail;
}
close(STDOUT_FILENO);
diff --git a/src/responder/nss/nsssrv_mmap_cache.c b/src/responder/nss/nsssrv_mmap_cache.c
index 7a7a498b..e60d0619 100644
--- a/src/responder/nss/nsssrv_mmap_cache.c
+++ b/src/responder/nss/nsssrv_mmap_cache.c
@@ -512,16 +512,16 @@ static errno_t sss_mc_set_recycled(int fd)
/* What do we do now ? */
return errno;
}
- pos = 0;
- while (pos < sizeof(h.status)) {
- ret = write(fd, ((uint8_t *)&w) + pos, sizeof(h.status) - pos);
- if (ret == -1) {
- if (errno != EINTR) {
- return errno;
- }
- continue;
- }
- pos += ret;
+
+ errno = 0;
+ ret = sss_atomic_write_s(fd, (uint8_t *)&w, sizeof(h.status));
+ if (ret == -1) {
+ return errno;
+ }
+
+ if (ret != sizeof(h.status)) {
+ /* Write error */
+ return EIO;
}
return EOK;
diff --git a/src/responder/ssh/sshsrv_cmd.c b/src/responder/ssh/sshsrv_cmd.c
index 4882bacf..14913707 100644
--- a/src/responder/ssh/sshsrv_cmd.c
+++ b/src/responder/ssh/sshsrv_cmd.c
@@ -516,7 +516,7 @@ ssh_host_pubkeys_update_known_hosts(struct ssh_cmd_ctx *cmd_ctx)
goto done;
}
- wret = sss_atomic_write(fd, line, strlen(line));
+ wret = sss_atomic_write_s(fd, line, strlen(line));
if (wret == -1) {
ret = errno;
goto done;
diff --git a/src/sss_client/pam_sss.c b/src/sss_client/pam_sss.c
index 8778fe19..3de810c5 100644
--- a/src/sss_client/pam_sss.c
+++ b/src/sss_client/pam_sss.c
@@ -47,6 +47,7 @@
#include "sss_pam_macros.h"
#include "sss_cli.h"
+#include "util/atomic_io.h"
#include <libintl.h>
#define _(STRING) dgettext (PACKAGE, STRING)
@@ -499,17 +500,12 @@ static errno_t display_pw_reset_message(pam_handle_t *pamh,
goto done;
}
-
- total_len = 0;
- while (total_len < stat_buf.st_size) {
- ret = read(fd, msg_buf + total_len, stat_buf.st_size - total_len);
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) continue;
- ret = errno;
- D(("read failed [%d][%s].", ret, strerror(ret)));
- goto done;
- }
- total_len += ret;
+ errno = 0;
+ total_len = sss_atomic_read_s(fd, msg_buf, stat_buf.st_size);
+ if (ret == -1) {
+ ret = errno;
+ D(("read failed [%d][%s].", ret, strerror(ret)));
+ goto done;
}
ret = close(fd);
@@ -1088,7 +1084,8 @@ static int send_and_receive(pam_handle_t *pamh, struct pam_items *pi,
#ifdef HAVE_SELINUX
char *path = NULL;
char *tmp_path = NULL;
- int pos, len;
+ ssize_t written;
+ int len;
int fd;
mode_t oldmask;
#endif /* HAVE_SELINUX */
@@ -1206,21 +1203,24 @@ static int send_and_receive(pam_handle_t *pamh, struct pam_items *pi,
goto done;
}
- pos = 0;
len = strlen(pi->selinux_user);
- while (pos < len) {
- ret = write(fd, pi->selinux_user + pos, len-pos);
- if (ret < 0) {
- if (errno != EINTR) {
- logger(pamh, LOG_ERR, "writing to SELinux data file "
- "failed. %s", tmp_path);
- pam_status = PAM_SYSTEM_ERR;
- goto done;
- }
- continue;
- }
- pos += ret;
+
+ errno = 0;
+ written = sss_atomic_write_s(fd, pi->selinux_user, len);
+ if (written == -1) {
+ ret = errno;
+ logger(pamh, LOG_ERR, "writing to SELinux data file "
+ "failed. %s", tmp_path);
+ pam_status = PAM_SYSTEM_ERR;
+ goto done;
}
+
+ if (written != len) {
+ logger(pamh, LOG_ERR, "Expected to write %d bytes, wrote %d",
+ written, len);
+ goto done;
+ }
+
close(fd);
rename(tmp_path, path);
diff --git a/src/sss_client/ssh/sss_ssh_knownhostsproxy.c b/src/sss_client/ssh/sss_ssh_knownhostsproxy.c
index 6424d7b7..e45ef45f 100644
--- a/src/sss_client/ssh/sss_ssh_knownhostsproxy.c
+++ b/src/sss_client/ssh/sss_ssh_knownhostsproxy.c
@@ -140,11 +140,11 @@ connect_socket(int family, struct sockaddr *addr, size_t addr_len)
}
errno = 0;
- res = sss_atomic_write(i == 0 ? sock : 1, buffer, res);
+ res = sss_atomic_write_s(i == 0 ? sock : 1, buffer, res);
ret = errno;
if (res == -1) {
DEBUG(SSSDBG_OP_FAILURE,
- ("sss_atomic_write() failed (%d): %s\n",
+ ("sss_atomic_write_s() failed (%d): %s\n",
ret, strerror(ret)));
goto done;
} else if (ret == EPIPE) {
diff --git a/src/tools/files.c b/src/tools/files.c
index 69475354..d80e3bd9 100644
--- a/src/tools/files.c
+++ b/src/tools/files.c
@@ -411,7 +411,7 @@ static int copy_file(const char *src,
int ifd = -1;
int ofd = -1;
char buf[1024];
- ssize_t cnt, written, res;
+ ssize_t cnt, written;
struct stat fstatbuf;
ifd = open(src, O_RDONLY);
@@ -463,41 +463,28 @@ static int copy_file(const char *src,
goto fail;
}
- while ((cnt = read(ifd, buf, sizeof(buf))) != 0) {
+ while ((cnt = sss_atomic_read_s(ifd, buf, sizeof(buf))) != 0) {
if (cnt == -1) {
- if (errno == EINTR || errno == EAGAIN) {
- continue;
- }
-
- DEBUG(1, ("Cannot read() from source file '%s': [%d][%s].\n",
- src, ret, strerror(ret)));
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Cannot read() from source file '%s': [%d][%s].\n",
+ src, ret, strerror(ret)));
goto fail;
}
- else if (cnt > 0) {
- /* Copy the buffer to the new file */
- written = 0;
- while (written < cnt) {
- res = write(ofd, buf+written, (size_t)cnt-written);
- if (res == -1) {
- ret = errno;
- if (ret == EINTR || ret == EAGAIN) {
- /* retry the write */
- continue;
- }
- DEBUG(1, ("Cannot write() to destination file '%s': [%d][%s].\n",
- dst, ret, strerror(ret)));
- goto fail;
- }
- else if (res <= 0) {
- DEBUG(1, ("Unexpected result from write(): [%d]\n", res));
- goto fail;
- }
-
- written += res;
- }
+
+ errno = 0;
+ written = sss_atomic_write_s(ofd, buf, cnt);
+ if (written == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Cannot write() to destination file '%s': [%d][%s].\n",
+ dst, ret, strerror(ret)));
+ goto fail;
}
- else {
- DEBUG(1, ("Unexpected return code of read [%d]\n", cnt));
+
+ if (written != cnt) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Wrote %d bytes, expected %d\n", written, cnt));
goto fail;
}
}
diff --git a/src/util/backup_file.c b/src/util/backup_file.c
index ba776404..edbf868c 100644
--- a/src/util/backup_file.c
+++ b/src/util/backup_file.c
@@ -33,9 +33,8 @@ int backup_file(const char *src_file, int dbglvl)
int src_fd = -1;
int dst_fd = -1;
char *dst_file;
- ssize_t count;
- ssize_t num;
- ssize_t pos;
+ ssize_t numread;
+ ssize_t written;
int ret, i;
src_fd = open(src_file, O_RDONLY);
@@ -84,31 +83,30 @@ int backup_file(const char *src_file, int dbglvl)
/* copy file contents */
while (1) {
- num = read(src_fd, buf, BUFFER_SIZE);
- if (num < 0) {
- if (errno == EINTR || errno == EAGAIN) continue;
+ errno = 0;
+ numread = sss_atomic_read_s(src_fd, buf, BUFFER_SIZE);
+ if (numread < 0) {
ret = errno;
DEBUG(dbglvl, ("Error (%d [%s]) reading from source %s\n",
ret, strerror(ret), src_file));
goto done;
}
- if (num == 0) break;
-
- count = num;
-
- pos = 0;
- while (count > 0) {
- errno = 0;
- num = write(dst_fd, &buf[pos], count);
- if (num < 0) {
- if (errno == EINTR || errno == EAGAIN) continue;
- ret = errno;
- DEBUG(dbglvl, ("Error (%d [%s]) writing to destination %s\n",
- ret, strerror(ret), dst_file));
- goto done;
- }
- pos += num;
- count -= num;
+ if (numread == 0) break;
+
+ errno = 0;
+ written = sss_atomic_write_s(dst_fd, buf, numread);
+ if (written == -1) {
+ ret = errno;
+ DEBUG(dbglvl, ("Error (%d [%s]) writing to destination %s\n",
+ ret, strerror(ret), dst_file));
+ goto done;
+ }
+
+ if (written != numread) {
+ DEBUG(dbglvl, ("Wrote %d bytes expected %d bytes\n",
+ written, numread));
+ ret = EIO;
+ goto done;
}
}
diff --git a/src/util/child_common.c b/src/util/child_common.c
index 6214c7cc..05f00b0f 100644
--- a/src/util/child_common.c
+++ b/src/util/child_common.c
@@ -337,42 +337,36 @@ static void write_pipe_handler(struct tevent_context *ev,
struct tevent_req *req = talloc_get_type(pvt, struct tevent_req);
struct write_pipe_state *state = tevent_req_data(req,
struct write_pipe_state);
- ssize_t size;
+ errno_t ret;
if (flags & TEVENT_FD_READ) {
- DEBUG(1, ("write_pipe_done called with TEVENT_FD_READ,"
- " this should not happen.\n"));
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("write_pipe_done called with TEVENT_FD_READ,"
+ " this should not happen.\n"));
tevent_req_error(req, EINVAL);
return;
}
- size = write(state->fd,
- state->buf + state->written,
- state->len - state->written);
- if (size == -1) {
- if (errno == EAGAIN || errno == EINTR) return;
- DEBUG(1, ("write failed [%d][%s].\n", errno, strerror(errno)));
- tevent_req_error(req, errno);
- return;
-
- } else if (size >= 0) {
- state->written += size;
- if (state->written > state->len) {
- DEBUG(1, ("write to much, this should never happen.\n"));
- tevent_req_error(req, EINVAL);
- return;
- }
- } else {
- DEBUG(1, ("unexpected return value of write [%d].\n", size));
- tevent_req_error(req, EINVAL);
+ errno = 0;
+ state->written = sss_atomic_write_s(state->fd, state->buf, state->len);
+ if (state->written == -1) {
+ ret = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("write failed [%d][%s].\n", ret, strerror(ret)));
+ tevent_req_error(req, ret);
return;
}
- if (state->len == state->written) {
- DEBUG(6, ("All data has been sent!\n"));
- tevent_req_done(req);
+ if (state->len != state->written) {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Wrote %d bytes, expected %d\n",
+ state->written, state->len));
+ tevent_req_error(req, EIO);
return;
}
+
+ DEBUG(SSSDBG_TRACE_FUNC, ("All data has been sent!\n"));
+ tevent_req_done(req);
+ return;
}
int write_pipe_recv(struct tevent_req *req)
@@ -438,16 +432,13 @@ static void read_pipe_handler(struct tevent_context *ev,
return;
}
- size = read(state->fd,
+ size = sss_atomic_read_s(state->fd,
buf,
CHILD_MSG_CHUNK);
if (size == -1) {
err = errno;
- if (err == EAGAIN || err == EINTR) {
- return;
- }
-
- DEBUG(1, ("read failed [%d][%s].\n", err, strerror(err)));
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("read failed [%d][%s].\n", err, strerror(err)));
tevent_req_error(req, err);
return;
diff --git a/src/util/find_uid.c b/src/util/find_uid.c
index 77b9f22a..d34a4abd 100644
--- a/src/util/find_uid.c
+++ b/src/util/find_uid.c
@@ -107,15 +107,13 @@ static errno_t get_uid_from_pid(const pid_t pid, uid_t *uid)
goto fail_fd;
}
- while ((ret = read(fd, buf, BUFSIZE)) != 0) {
- if (ret == -1) {
- error = errno;
- if (error == EINTR || error == EAGAIN) {
- continue;
- }
- DEBUG(1, ("read failed [%d][%s].\n", error, strerror(error)));
- goto fail_fd;
- }
+ errno = 0;
+ ret = sss_atomic_read_s(fd, buf, BUFSIZE);
+ if (ret == -1) {
+ error = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("read failed [%d][%s].\n", error, strerror(error)));
+ goto fail_fd;
}
/* Guarantee NULL-termination in case we read the full BUFSIZE somehow */
diff --git a/src/util/server.c b/src/util/server.c
index 95b18363..39cc1277 100644
--- a/src/util/server.c
+++ b/src/util/server.c
@@ -117,51 +117,36 @@ int pidfile(const char *path, const char *name)
fd = open(file, O_RDONLY, 0644);
err = errno;
if (fd != -1) {
- len = 0;
- while ((ret = read(fd, pid_str + len, pidlen - len)) != 0) {
- if (ret == -1) {
- if (errno == EINTR || errno == EAGAIN) {
- continue;
- }
- DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
- break;
- } else if (ret > 0) {
- len += ret;
- if (len > pidlen) {
- DEBUG(1, ("read too much, this should never happen.\n"));
- close(fd);
- talloc_free(file);
- return EINVAL;
- }
- continue;
- } else {
- DEBUG(1, ("unexpected return code of read [%d].\n", ret));
- break;
- }
+ errno = 0;
+ len = sss_atomic_read_s(fd, pid_str, pidlen);
+ ret = errno;
+ if (len == -1) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("read failed [%d][%s].\n", ret, strerror(ret)));
+ close(fd);
+ talloc_free(file);
+ return EINVAL;
}
/* Ensure NULL-termination */
pid_str[len] = '\0';
- if (ret == 0) {
- /* let's check the pid */
-
- pid = (pid_t)atoi(pid_str);
- if (pid != 0) {
- errno = 0;
- ret = kill(pid, 0);
- /* succeeded in signaling the process -> another sssd process */
- if (ret == 0) {
- close(fd);
- talloc_free(file);
- return EEXIST;
- }
- if (ret != 0 && errno != ESRCH) {
- err = errno;
- close(fd);
- talloc_free(file);
- return err;
- }
+ /* let's check the pid */
+ pid = (pid_t)atoi(pid_str);
+ if (pid != 0) {
+ errno = 0;
+ ret = kill(pid, 0);
+ /* succeeded in signaling the process -> another sssd process */
+ if (ret == 0) {
+ close(fd);
+ talloc_free(file);
+ return EEXIST;
+ }
+ if (ret != 0 && errno != ESRCH) {
+ err = errno;
+ close(fd);
+ talloc_free(file);
+ return err;
}
}
@@ -188,25 +173,20 @@ int pidfile(const char *path, const char *name)
snprintf(pid_str, sizeof(pid_str) -1, "%u\n", (unsigned int) getpid());
size = strlen(pid_str);
- written = 0;
- while (written < size) {
- ret = write(fd, pid_str+written, size-written);
- if (ret == -1) {
- err = errno;
- if (err == EINTR || err == EAGAIN) {
- continue;
- }
- DEBUG(1, ("write failed [%d][%s]\n", err, strerror(err)));
- break;
- }
- else {
- written += ret;
- }
+ errno = 0;
+ written = sss_atomic_write_s(fd, pid_str, size);
+ if (ret == -1) {
+ err = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("write failed [%d][%s]\n", err, strerror(err)));
+ return err;
}
if (written != size) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Wrote %d bytes expected %d\n", written, size));
close(fd);
- return err;
+ return EIO;
}
close(fd);
@@ -317,8 +297,10 @@ static void server_stdin_handler(struct tevent_context *event_ctx,
{
const char *binary_name = (const char *)private;
uint8_t c;
- if (read(0, &c, 1) == 0) {
- DEBUG(0,("%s: EOF on stdin - terminating\n", binary_name));
+
+ errno = 0;
+ if (sss_atomic_read_s(0, &c, 1) == 0) {
+ DEBUG(SSSDBG_CRIT_FAILURE,("%s: EOF on stdin - terminating\n", binary_name));
#if HAVE_GETPGRP
if (getpgrp() == getpid()) {
kill(-getpgrp(), SIGTERM);
generated by cgit (git 2.34.1) at 2024-11-25 01:14:52 +0000