diff options
Diffstat (limited to 'src/core/load-fragment.c')
| -rw-r--r-- | src/core/load-fragment.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c index a2e7097de0..f325d853c6 100644 --- a/src/core/load-fragment.c +++ b/src/core/load-fragment.c @@ -3891,6 +3891,132 @@ int config_parse_namespace_path_strv( return 0; } +int config_parse_bind_paths( + const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + + ExecContext *c = data; + const char *p; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + if (isempty(rvalue)) { + /* Empty assignment resets the list */ + bind_mount_free_many(c->bind_mounts, c->n_bind_mounts); + c->bind_mounts = NULL; + c->n_bind_mounts = 0; + return 0; + } + + p = rvalue; + for (;;) { + _cleanup_free_ char *source = NULL, *destination = NULL; + char *s = NULL, *d = NULL; + bool rbind = true, ignore_enoent = false; + + r = extract_first_word(&p, &source, ":" WHITESPACE, EXTRACT_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS); + if (r == 0) + break; + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s: %s", lvalue, rvalue); + return 0; + } + + s = source; + if (s[0] == '-') { + ignore_enoent = true; + s++; + } + + if (!utf8_is_valid(s)) { + log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, s); + return 0; + } + if (!path_is_absolute(s)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Not an absolute source path, ignoring: %s", s); + return 0; + } + + path_kill_slashes(s); + + /* Optionally, the destination is specified. */ + if (p && p[-1] == ':') { + r = extract_first_word(&p, &destination, ":" WHITESPACE, EXTRACT_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s: %s", lvalue, rvalue); + return 0; + } + if (r == 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Missing argument after ':': %s", rvalue); + return 0; + } + + if (!utf8_is_valid(destination)) { + log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, destination); + return 0; + } + if (!path_is_absolute(destination)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Not an absolute destination path, ignoring: %s", destination); + return 0; + } + + d = path_kill_slashes(destination); + + /* Optionally, there's also a short option string specified */ + if (p && p[-1] == ':') { + _cleanup_free_ char *options = NULL; + + r = extract_first_word(&p, &options, NULL, EXTRACT_QUOTES); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s: %s", lvalue, rvalue); + return 0; + } + + if (isempty(options) || streq(options, "rbind")) + rbind = true; + else if (streq(options, "norbind")) + rbind = false; + else { + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid option string, ignoring setting: %s", options); + return 0; + } + } + } else + d = s; + + r = bind_mount_add(&c->bind_mounts, &c->n_bind_mounts, + &(BindMount) { + .source = s, + .destination = d, + .read_only = !!strstr(lvalue, "ReadOnly"), + .recursive = rbind, + .ignore_enoent = ignore_enoent, + }); + if (r < 0) + return log_oom(); + } + + return 0; +} + int config_parse_no_new_privileges( const char* unit, const char *filename, @@ -4388,6 +4514,7 @@ void unit_dump_config_items(FILE *f) { { config_parse_sec, "SECONDS" }, { config_parse_nsec, "NANOSECONDS" }, { config_parse_namespace_path_strv, "PATH [...]" }, + { config_parse_bind_paths, "PATH[:PATH[:OPTIONS]] [...]" }, { config_parse_unit_requires_mounts_for, "PATH [...]" }, { config_parse_exec_mount_flags, "MOUNTFLAG [...]" }, { config_parse_unit_string_printf, "STRING" }, |