| 0,0 → 1,50 |
|---|
| /* |
| * An example plug-in, which implements the 'cd' command. |
| */ |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <pwd.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include "../esh.h" |
| #include <signal.h> |
| #include "../esh-sys-utils.h" |
| |
| static bool |
| init_plugin(struct esh_shell *shell) |
| { |
| printf("Plugin 'cd' initialized...\n"); |
| return true; |
| } |
| |
| /* Implement chdir built-in. |
| * Returns true if handled, false otherwise. */ |
| static bool |
| chdir_builtin(struct esh_command *cmd) |
| { |
| if (strcmp(cmd->argv[0], "cd")) |
| return false; |
| |
| char *dir = cmd->argv[1]; |
| // if no argument is given, default to home directory |
| if (dir == NULL) { |
| struct passwd *pw = getpwuid(getuid()); |
| if (pw == NULL) { |
| esh_sys_error("Could not obtain home directory.\n" |
| "getpwuid(%d) failed: ", getuid()); |
| } else { |
| dir = pw->pw_dir; |
| } |
| } |
| |
| if (chdir(dir) != 0) |
| esh_sys_error("chdir: "); |
| |
| return true; |
| } |
| |
| struct esh_plugin esh_module = { |
| .rank = 1, |
| .init = init_plugin, |
| .process_builtin = chdir_builtin |
| }; |