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-rw-r--r--src/krb5_plugin/sssd_krb5_locator_plugin.c2
-rw-r--r--src/monitor/monitor.c4
-rw-r--r--src/providers/krb5/krb5_common.c25
-rw-r--r--src/sss_client/common.c16
-rw-r--r--src/sss_client/pam_sss.c2
-rw-r--r--src/tools/files.c55
-rw-r--r--src/util/backup_file.c4
-rw-r--r--src/util/find_uid.c13
-rw-r--r--src/util/server.c52
9 files changed, 131 insertions, 42 deletions
diff --git a/src/krb5_plugin/sssd_krb5_locator_plugin.c b/src/krb5_plugin/sssd_krb5_locator_plugin.c
index dfc9c197..70479efd 100644
--- a/src/krb5_plugin/sssd_krb5_locator_plugin.c
+++ b/src/krb5_plugin/sssd_krb5_locator_plugin.c
@@ -133,7 +133,7 @@ static int get_krb5info(const char *realm, struct sssd_ctx *ctx,
memset(buf, 0, BUFSIZE+1);
while (len != 0 && (ret = read(fd, p, len)) != 0) {
if (ret == -1) {
- if (errno == EINTR) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
PLUGIN_DEBUG(("read failed [%d][%s].\n", errno, strerror(errno)));
close(fd);
goto done;
diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c
index 8820d695..e52d7934 100644
--- a/src/monitor/monitor.c
+++ b/src/monitor/monitor.c
@@ -1372,7 +1372,7 @@ static void process_config_file(struct tevent_context *ev,
len = read(file_ctx->mt_ctx->inotify_fd, buf+total_len,
event_size-total_len);
if (len == -1) {
- if (errno == EINTR) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
DEBUG(0, ("Critical error reading inotify file descriptor.\n"));
goto done;
}
@@ -1393,7 +1393,7 @@ static void process_config_file(struct tevent_context *ev,
while (total_len < in_event->len) {
len = read(file_ctx->mt_ctx->inotify_fd, &name, in_event->len);
if (len == -1) {
- if (errno == EINTR) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
DEBUG(0, ("Critical error reading inotify file descriptor.\n"));
goto done;
}
diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index c78f0e60..fbc30889 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -158,6 +158,7 @@ errno_t write_krb5info_file(const char *realm, const char *server,
TALLOC_CTX *tmp_ctx = NULL;
const char *name_tmpl = NULL;
int server_len;
+ ssize_t written;
if (realm == NULL || *realm == '\0' || server == NULL || *server == '\0' ||
service == NULL || service == '\0') {
@@ -203,14 +204,24 @@ errno_t write_krb5info_file(const char *realm, const char *server,
goto done;
}
- ret = write(fd, server, server_len);
- if (ret == -1) {
- DEBUG(1, ("write failed [%d][%s].\n", errno, strerror(errno)));
- 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;
+ }
+ DEBUG(1, ("write failed [%d][%s].\n", errno, strerror(errno)));
+ goto done;
+ }
+ else {
+ written += ret;
+ }
}
- if (ret != server_len) {
- DEBUG(1, ("Partial write occured, this should never happen.\n"));
- ret = EINTR;
+
+ if (written != server_len) {
+ DEBUG(1, ("Write error, wrote [%d] bytes, expected [%d]\n",
+ written, server_len));
goto done;
}
diff --git a/src/sss_client/common.c b/src/sss_client/common.c
index 237b90ab..a4856e08 100644
--- a/src/sss_client/common.c
+++ b/src/sss_client/common.c
@@ -123,6 +123,7 @@ static enum nss_status sss_nss_send_req(enum sss_cli_command cmd,
return NSS_STATUS_UNAVAIL;
}
+ errno = 0;
if (datasent < SSS_NSS_HEADER_SIZE) {
res = write(sss_cli_sd,
(char *)header + datasent,
@@ -133,8 +134,15 @@ static enum nss_status sss_nss_send_req(enum sss_cli_command cmd,
(const char *)rd->data + rdsent,
rd->len - rdsent);
}
+ error = errno;
if ((res == -1) || (res == 0)) {
+ if ((error == EINTR) || error == EAGAIN) {
+ /* If the write was interrupted, go back through
+ * the loop and try again
+ */
+ continue;
+ }
/* Write failed */
sss_cli_close_socket();
@@ -217,6 +225,7 @@ static enum nss_status sss_nss_recv_rep(enum sss_cli_command cmd,
return NSS_STATUS_UNAVAIL;
}
+ errno = 0;
if (datarecv < SSS_NSS_HEADER_SIZE) {
res = read(sss_cli_sd,
(char *)header + datarecv,
@@ -227,8 +236,15 @@ static enum nss_status sss_nss_recv_rep(enum sss_cli_command cmd,
(char *)(*buf) + bufrecv,
header[0] - datarecv);
}
+ error = errno;
if ((res == -1) || (res == 0)) {
+ if ((error == EINTR) || error == EAGAIN) {
+ /* If the read was interrupted, go back through
+ * the loop and try again
+ */
+ continue;
+ }
/* Read failed. I think the only useful thing
* we can do here is just return -1 and fail
diff --git a/src/sss_client/pam_sss.c b/src/sss_client/pam_sss.c
index 2faa3ad2..644073f5 100644
--- a/src/sss_client/pam_sss.c
+++ b/src/sss_client/pam_sss.c
@@ -489,7 +489,7 @@ static errno_t display_pw_reset_message(pam_handle_t *pamh,
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) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
ret = errno;
D(("read failed [%d][%s].", ret, strerror(ret)));
goto done;
diff --git a/src/tools/files.c b/src/tools/files.c
index b3b516ea..27ebf72d 100644
--- a/src/tools/files.c
+++ b/src/tools/files.c
@@ -402,7 +402,7 @@ static int copy_file(const char *src,
int ifd = -1;
int ofd = -1;
char buf[1024];
- ssize_t cnt, written, offset;
+ ssize_t cnt, written, res;
struct stat fstatbuf;
ifd = open(src, O_RDONLY);
@@ -454,27 +454,44 @@ static int copy_file(const char *src,
goto fail;
}
- while ((cnt = read(ifd, buf, sizeof(buf))) > 0) {
- offset = 0;
- while (cnt > 0) {
- written = write(ofd, buf+offset, (size_t)cnt);
- if (written == -1) {
- ret = errno;
- DEBUG(1, ("Cannot write() to source file '%s': [%d][%s].\n",
- dst, ret, strerror(ret)));
- goto fail;
+ while ((cnt = read(ifd, buf, sizeof(buf))) != 0) {
+ if (cnt == -1) {
+ if (errno == EINTR || errno == EAGAIN) {
+ continue;
}
- offset += written;
- cnt -= written;
+
+ DEBUG(1, ("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;
+ }
+ }
+ else {
+ DEBUG(1, ("Unexpected return code of read [%d]\n", cnt));
+ goto fail;
}
}
- if (cnt == -1) {
- ret = errno;
- DEBUG(1, ("Cannot read() from source file '%s': [%d][%s].\n",
- dst, ret, strerror(ret)));
- goto fail;
- }
-
ret = close(ifd);
ifd = -1;
diff --git a/src/util/backup_file.c b/src/util/backup_file.c
index cf9ddf30..99079327 100644
--- a/src/util/backup_file.c
+++ b/src/util/backup_file.c
@@ -86,7 +86,7 @@ int backup_file(const char *src_file, int dbglvl)
while (1) {
num = read(src_fd, buf, BUFFER_SIZE);
if (num < 0) {
- if (errno == EINTR) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
ret = errno;
DEBUG(dbglvl, ("Error (%d [%s]) reading from source %s\n",
ret, strerror(ret), src_file));
@@ -101,7 +101,7 @@ int backup_file(const char *src_file, int dbglvl)
errno = 0;
num = write(dst_fd, &buf[pos], count);
if (num < 0) {
- if (errno == EINTR) continue;
+ if (errno == EINTR || errno == EAGAIN) continue;
ret = errno;
DEBUG(dbglvl, ("Error (%d [%s]) writing to destination %s\n",
ret, strerror(ret), dst_file));
diff --git a/src/util/find_uid.c b/src/util/find_uid.c
index 965966ef..952aeea4 100644
--- a/src/util/find_uid.c
+++ b/src/util/find_uid.c
@@ -100,10 +100,15 @@ static errno_t get_uid_from_pid(const pid_t pid, uid_t *uid)
DEBUG(1, ("open failed [%d][%s].\n", errno, strerror(errno)));
return errno;
}
- ret = read(fd, buf, BUFSIZE);
- if (ret == -1) {
- DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
- return errno;
+
+ while ((ret = read(fd, buf, BUFSIZE)) != 0) {
+ if (ret == -1) {
+ if (errno == EINTR || errno == EAGAIN) {
+ continue;
+ }
+ DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
+ return errno;
+ }
}
ret = close(fd);
diff --git a/src/util/server.c b/src/util/server.c
index 007b3624..8f5b4414 100644
--- a/src/util/server.c
+++ b/src/util/server.c
@@ -104,6 +104,10 @@ int pidfile(const char *path, const char *name)
char *file;
int fd;
int ret, err;
+ ssize_t len;
+ ssize_t size;
+ ssize_t written;
+ ssize_t pidlen = sizeof(pid_str - 1);
file = talloc_asprintf(NULL, "%s/%s.pid", path, name);
if (!file) {
@@ -114,9 +118,30 @@ int pidfile(const char *path, const char *name)
err = errno;
if (fd != -1) {
- pid_str[sizeof(pid_str) -1] = '\0';
- ret = read(fd, pid_str, sizeof(pid_str) -1);
- if (ret > 0) {
+ pid_str[pidlen] = '\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"));
+ break;
+ }
+ continue;
+ } else {
+ DEBUG(1, ("unexpected return code of read [%d].\n", ret));
+ break;
+ }
+ }
+
+ if (ret == 0) {
/* let's check the pid */
pid = (pid_t)atoi(pid_str);
@@ -159,10 +184,25 @@ int pidfile(const char *path, const char *name)
memset(pid_str, 0, sizeof(pid_str));
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;
+ }
+ }
- ret = write(fd, pid_str, strlen(pid_str));
- err = errno;
- if (ret != strlen(pid_str)) {
+ if (written != size) {
close(fd);
return err;
}
generated by cgit (git 2.34.1) at 2024-12-12 09:52:20 +0000