* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <fcntl.h>
#include <string.h>
#include <dirent.h>
-#
#include "ustcomm.h"
#include "ustcmd.h"
+#include "usterr.h"
-#define _GNU_SOURCE
-
-pid_t* ustcmd_get_online_pids(void) {
- struct dirent* dirent;
- DIR* dir;
- char* ping_res;
+pid_t *ustcmd_get_online_pids(void)
+{
+ struct dirent *dirent;
+ DIR *dir;
+ unsigned int ret_size = 1 * sizeof(pid_t), i = 0;
dir = opendir(SOCK_DIR);
if (!dir) {
return NULL;
}
- unsigned int ret_size = 1 * sizeof(pid_t), i = 0;
- pid_t* ret = (pid_t*) malloc(ret_size);
+ pid_t *ret = (pid_t *) malloc(ret_size);
- while (dirent = readdir(dir)) {
+ while ((dirent = readdir(dir))) {
if (!strcmp(dirent->d_name, ".") ||
!strcmp(dirent->d_name, "..")) {
if (dirent->d_type != DT_DIR &&
!!strcmp(dirent->d_name, "ustd")) {
- sscanf(dirent->d_name, "%u", (unsigned int*) &ret[i]);
+ sscanf(dirent->d_name, "%u", (unsigned int *) &ret[i]);
if (pid_is_online(ret[i])) {
ret_size += sizeof(pid_t);
- ret = (pid_t*) realloc(ret, ret_size);
+ ret = (pid_t *) realloc(ret, ret_size);
++i;
}
}
ret[i] = 0; /* Array end */
- if (ret[0] == 0) { /* No PID at all.. */
+ if (ret[0] == 0) {
+ /* No PID at all */
free(ret);
return NULL;
}
* @param pid Traced process ID
* @return 0 if successful, or errors {USTCMD_ERR_GEN, USTCMD_ERR_ARG}
*/
-int ustcmd_set_marker_state(const char* mn, int state, pid_t pid) {
+int ustcmd_set_marker_state(const char *mn, int state, pid_t pid)
+{
+ char *cmd_str [] = {"disable_marker", "enable_marker"};
+ char *cmd;
+ int result;
+
if (mn == NULL) {
return USTCMD_ERR_ARG;
}
- char* cmd_str [] = {"disable_marker", "enable_marker"};
- char* cmd;
asprintf(&cmd, "%s %s", cmd_str[state], mn);
- int tres;
- if (tres = ustcmd_shoot(cmd, pid, NULL)) {
+ result = ustcmd_send_cmd(cmd, pid, NULL);
+ if (result) {
free(cmd);
return USTCMD_ERR_GEN;
}
return 0;
}
+/**
+ * Set subbuffer size.
+ *
+ * @param channel_size Channel name and size
+ * @param pid Traced process ID
+ * @return 0 if successful, or error
+ */
+int ustcmd_set_subbuf_size(const char *channel_size, pid_t pid)
+{
+ char *cmd;
+ int result;
+
+ asprintf(&cmd, "%s %s", "set_subbuf_size", channel_size);
+
+ result = ustcmd_send_cmd(cmd, pid, NULL);
+ if (result != 1) {
+ free(cmd);
+ return 1;
+ }
+
+ free(cmd);
+ return 0;
+}
+
+/**
+ * Set subbuffer num.
+ *
+ * @param channel_num Channel name and num
+ * @param pid Traced process ID
+ * @return 0 if successful, or error
+ */
+int ustcmd_set_subbuf_num(const char *channel_size, pid_t pid)
+{
+ char *cmd;
+ int result;
+
+ asprintf(&cmd, "%s %s", "set_subbuf_num", channel_size);
+
+ result = ustcmd_send_cmd(cmd, pid, NULL);
+ if (result != 1) {
+ free(cmd);
+ return 1;
+ }
+
+ free(cmd);
+ return 0;
+}
+
+/**
+ * Get subbuffer size.
+ *
+ * @param channel Channel name
+ * @param pid Traced process ID
+ * @return subbuf size if successful, or error
+ */
+int ustcmd_get_subbuf_size(const char *channel, pid_t pid)
+{
+ char *cmd, *reply;
+ int result;
+
+ /* format: channel_cpu */
+ asprintf(&cmd, "%s %s_0", "get_subbuf_size", channel);
+
+ result = ustcmd_send_cmd(cmd, pid, &reply);
+ if (result) {
+ free(cmd);
+ free(reply);
+ return -1;
+ }
+
+ result = atoi(reply);
+ free(cmd);
+ free(reply);
+ return result;
+}
+
+/**
+ * Get subbuffer num.
+ *
+ * @param channel Channel name
+ * @param pid Traced process ID
+ * @return subbuf cnf if successful, or error
+ */
+int ustcmd_get_subbuf_num(const char *channel, pid_t pid)
+{
+ char *cmd, *reply;
+ int result;
+
+ /* format: channel_cpu */
+ asprintf(&cmd, "%s %s_0", "get_n_subbufs", channel);
+
+ result = ustcmd_send_cmd(cmd, pid, &reply);
+ if (result) {
+ free(cmd);
+ free(reply);
+ return -1;
+ }
+
+ result = atoi(reply);
+ free(cmd);
+ free(reply);
+ return result;
+}
+
/**
* Destroys an UST trace according to a PID.
*
* @param pid Traced process ID
* @return 0 if successful, or error USTCMD_ERR_GEN
*/
-int ustcmd_destroy_trace(pid_t pid) {
- int tres;
+int ustcmd_destroy_trace(pid_t pid)
+{
+ int result;
- if (tres = ustcmd_shoot("destroy", pid, NULL)) {
+ result = ustcmd_send_cmd("trace_destroy", pid, NULL);
+ if (result != 1) {
return USTCMD_ERR_GEN;
}
* @param pid Traced process ID
* @return 0 if successful, or error USTCMD_ERR_GEN
*/
-int ustcmd_setup_and_start(pid_t pid) {
- int tres;
+int ustcmd_setup_and_start(pid_t pid)
+{
+ int result;
- if (tres = ustcmd_shoot("start", pid, NULL)) {
+ result = ustcmd_send_cmd("start", pid, NULL);
+ if (result != 1) {
+ return USTCMD_ERR_GEN;
+ }
+
+ return 0;
+}
+
+/**
+ * Creates an UST trace according to a PID.
+ *
+ * @param pid Traced process ID
+ * @return 0 if successful, or error USTCMD_ERR_GEN
+ */
+int ustcmd_create_trace(pid_t pid)
+{
+ int result;
+
+ result = ustcmd_send_cmd("trace_create", pid, NULL);
+ if (result != 1) {
return USTCMD_ERR_GEN;
}
* @param pid Traced process ID
* @return 0 if successful, or error USTCMD_ERR_GEN
*/
-int ustcmd_start_trace(pid_t pid) {
- int tres;
+int ustcmd_start_trace(pid_t pid)
+{
+ int result;
+
+ result = ustcmd_send_cmd("trace_start", pid, NULL);
+ if (result != 1) {
+ return USTCMD_ERR_GEN;
+ }
+
+ return 0;
+}
+
+/**
+ * Alloc an UST trace according to a PID.
+ *
+ * @param pid Traced process ID
+ * @return 0 if successful, or error USTCMD_ERR_GEN
+ */
+int ustcmd_alloc_trace(pid_t pid)
+{
+ int result;
- if (tres = ustcmd_shoot("trace_start", pid, NULL)) {
+ result = ustcmd_send_cmd("trace_alloc", pid, NULL);
+ if (result != 1) {
return USTCMD_ERR_GEN;
}
* @param pid Traced process ID
* @return 0 if successful, or error USTCMD_ERR_GEN
*/
-int ustcmd_stop_trace(pid_t pid) {
- int tres;
+int ustcmd_stop_trace(pid_t pid)
+{
+ int result;
- if (tres = ustcmd_shoot("trace_stop", pid, NULL)) {
+ result = ustcmd_send_cmd("trace_stop", pid, NULL);
+ if (result != 1) {
return USTCMD_ERR_GEN;
}
* @param str String to search in
* @return Total newlines count
*/
-unsigned int ustcmd_count_nl(const char* str) {
+unsigned int ustcmd_count_nl(const char *str)
+{
unsigned int i = 0, tot = 0;
while (str[i] != '\0') {
* @param cmsf CMSF array to free
* @return 0 if successful, or error USTCMD_ERR_ARG
*/
-int ustcmd_free_cmsf(struct USTcmd_cmsf* cmsf) {
+int ustcmd_free_cmsf(struct marker_status *cmsf)
+{
if (cmsf == NULL) {
return USTCMD_ERR_ARG;
}
* @param cmsf Pointer to CMSF array to be filled (callee allocates, caller
* frees with `ustcmd_free_cmsf')
* @param pid Targeted PID
- * @return 0 if successful, or errors {USTCMD_ERR_ARG, USTCMD_ERR_GEN}
+ * @return 0 if successful, or -1 on error
*/
-int ustcmd_get_cmsf(struct USTcmd_cmsf** cmsf, const pid_t pid) {
+int ustcmd_get_cmsf(struct marker_status **cmsf, const pid_t pid)
+{
+ char *big_str = NULL;
+ int result;
+ struct marker_status *tmp_cmsf = NULL;
+ unsigned int i = 0, cmsf_ind = 0;
+
if (cmsf == NULL) {
- return USTCMD_ERR_ARG;
+ return -1;
}
- char* big_str = NULL;
- int tres;
-
- if (tres = ustcmd_shoot("list_markers", pid, &big_str)) {
- return USTCMD_ERR_GEN;
+ result = ustcmd_send_cmd("list_markers", pid, &big_str);
+ if (result != 1) {
+ return -1;
}
- if (big_str == NULL) {
- fprintf(stderr, "ustcmd: error while getting markers list\n");
- return USTCMD_ERR_GEN;
+ if (result != 1) {
+ ERR("error while getting markers list");
+ return -1;
}
- struct USTcmd_cmsf* tmp_cmsf = NULL;
- tmp_cmsf = (struct USTcmd_cmsf*) malloc(sizeof(struct USTcmd_cmsf) *
+ tmp_cmsf = (struct marker_status *) malloc(sizeof(struct marker_status) *
(ustcmd_count_nl(big_str) + 1));
if (tmp_cmsf == NULL) {
- return USTCMD_ERR_GEN;
+ return -1;
}
/* Parse received reply string (format: "[chan]/[mark] [st] [fs]"): */
- unsigned int i = 0, cur_st, cmsf_ind = 0;
while (big_str[i] != '\0') {
char state;
- sscanf(big_str + i, "%a[^/]/%a[^ ] %c %a[^\n]",
+
+ sscanf(big_str + i, "marker: %a[^/]/%a[^ ] %c %a[^\n]",
&tmp_cmsf[cmsf_ind].channel,
&tmp_cmsf[cmsf_ind].marker,
&state,
}
/**
- * Shoots a given command using ustcomm.
+ * Set socket path
+ *
+ * @param sock_path Socket path
+ * @param pid Traced process ID
+ * @return 0 if successful, or error
+ */
+int ustcmd_set_sock_path(const char *sock_path, pid_t pid)
+{
+ char *cmd;
+ int result;
+
+ asprintf(&cmd, "%s %s", "set_sock_path", sock_path);
+
+ result = ustcmd_send_cmd(cmd, pid, NULL);
+ if (result != 1) {
+ free(cmd);
+ return USTCMD_ERR_GEN;
+ }
+
+ free(cmd);
+ return 0;
+}
+
+/**
+ * Get socket path
+ *
+ * @param sock_path Pointer to where the socket path will be returned
+ * @param pid Traced process ID
+ * @return 0 if successful, or error
+ */
+int ustcmd_get_sock_path(char **sock_path, pid_t pid)
+{
+ char *cmd, *reply;
+ int result;
+
+ asprintf(&cmd, "%s", "get_sock_path");
+
+ result = ustcmd_send_cmd(cmd, pid, &reply);
+ if (result != 1) {
+ free(cmd);
+ free(reply);
+ return USTCMD_ERR_GEN;
+ }
+
+ free(cmd);
+ *sock_path = reply;
+ return 0;
+}
+
+int ustcmd_force_switch(pid_t pid)
+{
+ int result;
+
+ result = ustcmd_send_cmd("force_switch", pid, NULL);
+ if (result != 1) {
+ return USTCMD_ERR_GEN;
+ }
+
+ return 0;
+}
+
+/**
+ * Sends a given command to a traceable process
*
- * @param cmd Null-terminated command to shoot
+ * @param cmd Null-terminated command to send
* @param pid Targeted PID
* @param reply Pointer to string to be filled with a reply string (must
* be NULL if no reply is needed for the given command).
- * @return 0 if successful, or errors {USTCMD_ERR_ARG, USTCMD_ERR_CONN}
+ * @return -1 if successful, 0 on EOT, 1 on success
*/
-int ustcmd_shoot(const char* cmd, const pid_t pid, char** reply) {
- if (cmd == NULL) {
- return USTCMD_ERR_ARG;
- }
+int ustcmd_send_cmd(const char *cmd, const pid_t pid, char **reply)
+{
struct ustcomm_connection conn;
+ int retval;
+
if (ustcomm_connect_app(pid, &conn)) {
- fprintf(stderr, "ustcmd_shoot: could not connect to PID %u\n",
- (unsigned int) pid);
- return USTCMD_ERR_CONN;
+ ERR("could not connect to PID %u", (unsigned int) pid);
+ return -1;
}
- ustcomm_send_request(&conn, cmd, reply);
+ retval = ustcomm_send_request(&conn, cmd, reply);
- return 0;
+ ustcomm_close_app(&conn);
+
+ return retval;
}
projects / ust.git / blobdiff