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107 lines
3.2 KiB
107 lines
3.2 KiB
--- a/src/bin/pg_ctl/pg_ctl.c
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+++ b/src/bin/pg_ctl/pg_ctl.c
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@@ -93,6 +93,7 @@ static char *event_source = NULL;
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static char *register_servicename = "PostgreSQL"; /* FIXME: + version ID? */
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static char *register_username = NULL;
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static char *register_password = NULL;
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+static char *username = "";
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static char *argv0 = NULL;
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static bool allow_core_files = false;
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static time_t start_time;
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@@ -2047,6 +2048,9 @@ do_help(void)
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#endif
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printf(_(" -s, --silent only print errors, no informational messages\n"));
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printf(_(" -t, --timeout=SECS seconds to wait when using -w option\n"));
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+#if !defined(WIN32) && !defined(__CYGWIN__)
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+ printf(_(" -U, --username=NAME user name of account PostgreSQL server is running as\n"));
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+#endif
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printf(_(" -V, --version output version information, then exit\n"));
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printf(_(" -w, --wait wait until operation completes (default)\n"));
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printf(_(" -W, --no-wait do not wait until operation completes\n"));
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@@ -2259,6 +2263,7 @@ main(int argc, char **argv)
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{"options", required_argument, NULL, 'o'},
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{"silent", no_argument, NULL, 's'},
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{"timeout", required_argument, NULL, 't'},
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+ {"username", required_argument, NULL, 'U'},
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{"core-files", no_argument, NULL, 'c'},
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{"wait", no_argument, NULL, 'w'},
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{"no-wait", no_argument, NULL, 'W'},
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@@ -2299,20 +2304,6 @@ main(int argc, char **argv)
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}
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}
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- /*
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- * Disallow running as root, to forestall any possible security holes.
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- */
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-#ifndef WIN32
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- if (geteuid() == 0)
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- {
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- write_stderr(_("%s: cannot be run as root\n"
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- "Please log in (using, e.g., \"su\") as the "
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- "(unprivileged) user that will\n"
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- "own the server process.\n"),
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- progname);
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- exit(1);
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- }
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-#endif
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env_wait = getenv("PGCTLTIMEOUT");
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if (env_wait != NULL)
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@@ -2399,11 +2390,15 @@ main(int argc, char **argv)
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wait_seconds_arg = true;
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break;
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case 'U':
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+#if defined(WIN32) || defined(__CYGWIN__)
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if (strchr(optarg, '\\'))
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register_username = pg_strdup(optarg);
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else
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/* Prepend .\ for local accounts */
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register_username = psprintf(".\\%s", optarg);
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+#else
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+ username = pg_strdup(optarg);
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+#endif
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break;
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case 'w':
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do_wait = true;
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@@ -2485,6 +2480,41 @@ main(int argc, char **argv)
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exit(1);
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}
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+ /*
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+ * Disallow running as root, to forestall any possible security holes.
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+ */
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+#if !defined(WIN32) && !defined(__CYGWIN__)
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+ if (geteuid() == 0)
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+ {
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+ struct passwd *p;
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+ if (!username || !strlen(username)) {
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+ fprintf(stderr,
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+ _("%s: when run as root, username needs to be provided\n"),
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+ progname);
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+ exit(1);
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+ }
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+ p = getpwnam(username);
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+ if (!p) {
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+ fprintf(stderr,
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+ _("%s: invalid username: %s\n"),
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+ progname, username);
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+ exit(1);
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+ }
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+ if (!p->pw_uid) {
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+ fprintf(stderr,
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+ _("%s: user needs to be non-root\n"),
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+ progname);
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+ exit(1);
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+ }
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+ if (setgid(p->pw_gid) || setuid(p->pw_uid)) {
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+ fprintf(stderr,
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+ _("%s: failed to set user id %d: %d (%s)\n"),
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+ progname, p->pw_uid, errno, strerror(errno));
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+ exit(1);
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+ }
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+ }
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+#endif
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+
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/* Note we put any -D switch into the env var above */
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pg_config = getenv("PGDATA");
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if (pg_config)
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