| /* Copyright libuv project contributors. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "uv.h" |
| #include "internal.h" |
| |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <errno.h> |
| |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <sys/ioctl.h> |
| #include <net/if.h> |
| #include <netinet/in.h> |
| #include <netinet/in6_var.h> |
| #include <arpa/inet.h> |
| |
| #include <sys/time.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <utmp.h> |
| #include <libgen.h> |
| |
| #include <sys/protosw.h> |
| #include <procinfo.h> |
| #include <sys/proc.h> |
| #include <sys/procfs.h> |
| |
| #include <sys/poll.h> |
| |
| #include <sys/pollset.h> |
| #include <ctype.h> |
| |
| #include <sys/mntctl.h> |
| #include <sys/vmount.h> |
| #include <limits.h> |
| #include <strings.h> |
| #include <sys/vnode.h> |
| |
| uint64_t uv__hrtime(uv_clocktype_t type) { |
| uint64_t G = 1000000000; |
| timebasestruct_t t; |
| read_wall_time(&t, TIMEBASE_SZ); |
| time_base_to_time(&t, TIMEBASE_SZ); |
| return (uint64_t) t.tb_high * G + t.tb_low; |
| } |
| |
| |
| /* |
| * We could use a static buffer for the path manipulations that we need outside |
| * of the function, but this function could be called by multiple consumers and |
| * we don't want to potentially create a race condition in the use of snprintf. |
| * There is no direct way of getting the exe path in AIX - either through /procfs |
| * or through some libc APIs. The below approach is to parse the argv[0]'s pattern |
| * and use it in conjunction with PATH environment variable to craft one. |
| */ |
| int uv_exepath(char* buffer, size_t* size) { |
| int res; |
| char args[PATH_MAX]; |
| char abspath[PATH_MAX]; |
| size_t abspath_size; |
| struct procsinfo pi; |
| |
| if (buffer == NULL || size == NULL || *size == 0) |
| return UV_EINVAL; |
| |
| pi.pi_pid = getpid(); |
| res = getargs(&pi, sizeof(pi), args, sizeof(args)); |
| if (res < 0) |
| return UV_EINVAL; |
| |
| /* |
| * Possibilities for args: |
| * i) an absolute path such as: /home/user/myprojects/nodejs/node |
| * ii) a relative path such as: ./node or ../myprojects/nodejs/node |
| * iii) a bare filename such as "node", after exporting PATH variable |
| * to its location. |
| */ |
| |
| /* Case i) and ii) absolute or relative paths */ |
| if (strchr(args, '/') != NULL) { |
| if (realpath(args, abspath) != abspath) |
| return UV__ERR(errno); |
| |
| abspath_size = strlen(abspath); |
| |
| *size -= 1; |
| if (*size > abspath_size) |
| *size = abspath_size; |
| |
| memcpy(buffer, abspath, *size); |
| buffer[*size] = '\0'; |
| |
| return 0; |
| } else { |
| /* Case iii). Search PATH environment variable */ |
| char trypath[PATH_MAX]; |
| char *clonedpath = NULL; |
| char *token = NULL; |
| char *path = getenv("PATH"); |
| |
| if (path == NULL) |
| return UV_EINVAL; |
| |
| clonedpath = uv__strdup(path); |
| if (clonedpath == NULL) |
| return UV_ENOMEM; |
| |
| token = strtok(clonedpath, ":"); |
| while (token != NULL) { |
| snprintf(trypath, sizeof(trypath) - 1, "%s/%s", token, args); |
| if (realpath(trypath, abspath) == abspath) { |
| /* Check the match is executable */ |
| if (access(abspath, X_OK) == 0) { |
| abspath_size = strlen(abspath); |
| |
| *size -= 1; |
| if (*size > abspath_size) |
| *size = abspath_size; |
| |
| memcpy(buffer, abspath, *size); |
| buffer[*size] = '\0'; |
| |
| uv__free(clonedpath); |
| return 0; |
| } |
| } |
| token = strtok(NULL, ":"); |
| } |
| uv__free(clonedpath); |
| |
| /* Out of tokens (path entries), and no match found */ |
| return UV_EINVAL; |
| } |
| } |
| |