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FlexRAN control delegation: write/remove depending if payload present

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This commit is contained in:
Robert Schmidt
2020-10-06 17:44:09 +02:00
parent 6e2c8d847a
commit 9e4320864f
1 changed files with 36 additions and 29 deletions
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openair2/ENB_APP/flexran_agent_common.c
+36 -29
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@@ -434,40 +434,47 @@ int flexran_agent_control_delegation(mid_t mod_id, const void *params, Protocol_
RC.flexran[mod_id]->cache_name, RC.flexran[mod_id]->cache_name,
control_delegation_msg->name); control_delegation_msg->name);
if (len >= sizeof(target)) { if (len >= sizeof(target)) {
LOG_E(FLEXRAN_AGENT, "target has been truncated, cannot write file\n"); LOG_E(FLEXRAN_AGENT, "target has been truncated, cannot write file name\n");
return 0; return 0;
} }
/* use low-level API: check whether exists while creating so we can abort if if (control_delegation_msg->has_payload) {
* it exists to not overwrite anything */ /* use low-level API: check whether exists while creating so we can abort if
int fd = open(target, O_CREAT | O_WRONLY | O_EXCL, S_IRUSR | S_IWUSR); * it exists to not overwrite anything */
if (fd >= 0) { int fd = open(target, O_CREAT | O_WRONLY | O_EXCL, S_IRUSR | S_IWUSR);
ssize_t l = write(fd, if (fd >= 0) {
control_delegation_msg->payload.data, ssize_t l = write(fd,
control_delegation_msg->payload.len); control_delegation_msg->payload.data,
close(fd); control_delegation_msg->payload.len);
if (l < control_delegation_msg->payload.len) { close(fd);
LOG_E(FLEXRAN_AGENT, if (l < control_delegation_msg->payload.len) {
"could not write complete control delegation to %s: only %ld out of " LOG_E(FLEXRAN_AGENT,
"%ld bytes\n", "could not write complete control delegation to %s: only %ld out of "
target, "%ld bytes\n",
l, target,
control_delegation_msg->payload.len); l,
return 0; control_delegation_msg->payload.len);
} else if (l < 0) { return 0;
LOG_E(FLEXRAN_AGENT, "can not write control delegation data to %s: %s\n", } else if (l < 0) {
target, strerror(errno)); LOG_E(FLEXRAN_AGENT, "can not write control delegation data to %s: %s\n",
return 0; target, strerror(errno));
} return 0;
LOG_I(FLEXRAN_AGENT, "wrote shared object %s\n", target); }
} else { LOG_I(FLEXRAN_AGENT, "wrote shared object %s\n", target);
if (errno == EEXIST) {
LOG_I(FLEXRAN_AGENT, "file %s already exists, remove it first\n", target);
} else { } else {
LOG_E(FLEXRAN_AGENT, "can not write control delegation data to %s: %s\n", if (errno == EEXIST) {
target, strerror(errno)); LOG_I(FLEXRAN_AGENT, "file %s already exists, remove it first\n", target);
return 0; } else {
LOG_E(FLEXRAN_AGENT, "can not write control delegation data to %s: %s\n",
target, strerror(errno));
return 0;
}
} }
} else {
LOG_W(FLEXRAN_AGENT, "remove file %s\n", target);
int rc = remove(target);
if (rc < 0)
LOG_E(FLEXRAN_AGENT, "cannot remove file %s: %s\n", target, strerror(errno));
} }
return 0; return 0;