mirror of
https://github.com/systemd/systemd.git
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Merge pull request #31048 from YHNdnzj/fstab-modernization
fstab-util/generator: a few cleanups/improvements
This commit is contained in:
Daan De Meyer
GitHub
commit
329288613c
@ -1327,33 +1327,31 @@ int read_timestamp_file(const char *fn, usec_t *ret) {
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return 0;
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}
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int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space) {
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int r;
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int fputs_with_separator(FILE *f, const char *s, const char *separator, bool *space) {
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assert(s);
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assert(space);
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/* Outputs the specified string with fputs(), but optionally prefixes it with a separator. The *space parameter
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* when specified shall initially point to a boolean variable initialized to false. It is set to true after the
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* first invocation. This call is supposed to be use in loops, where a separator shall be inserted between each
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* element, but not before the first one. */
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/* Outputs the specified string with fputs(), but optionally prefixes it with a separator.
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* The *space parameter when specified shall initially point to a boolean variable initialized
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* to false. It is set to true after the first invocation. This call is supposed to be use in loops,
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* where a separator shall be inserted between each element, but not before the first one. */
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if (!f)
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f = stdout;
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if (space) {
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if (!separator)
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separator = " ";
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if (*space) {
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r = fputs(separator, f);
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if (r < 0)
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return r;
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}
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if (*space)
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if (fputs(separator, f) < 0)
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return -EIO;
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*space = true;
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}
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return fputs(s, f);
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if (fputs(s, f) < 0)
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return -EIO;
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return 0;
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}
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/* A bitmask of the EOL markers we know */
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@ -143,7 +143,7 @@ int fflush_sync_and_check(FILE *f);
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int write_timestamp_file_atomic(const char *fn, usec_t n);
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int read_timestamp_file(const char *fn, usec_t *ret);
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int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space);
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int fputs_with_separator(FILE *f, const char *s, const char *separator, bool *space);
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typedef enum ReadLineFlags {
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READ_LINE_ONLY_NUL = 1 << 0,
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@ -91,13 +91,16 @@ void ordered_set_print(FILE *f, const char *field, OrderedSet *s) {
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bool space = false;
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char *p;
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assert(f);
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assert(field);
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if (ordered_set_isempty(s))
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return;
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fputs(field, f);
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ORDERED_SET_FOREACH(p, s)
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fputs_with_space(f, p, NULL, &space);
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fputs_with_separator(f, p, NULL, &space);
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fputc('\n', f);
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}
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@ -894,13 +894,15 @@ int fputstrv(FILE *f, char * const *l, const char *separator, bool *space) {
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bool b = false;
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int r;
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assert(f);
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/* Like fputs(), but for strv, and with a less stupid argument order */
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if (!space)
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space = &b;
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STRV_FOREACH(s, l) {
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r = fputs_with_space(f, *s, separator, space);
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r = fputs_with_separator(f, *s, separator, space);
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if (r < 0)
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return r;
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}
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@ -191,6 +191,8 @@ static int mount_array_add_swap(bool for_initrd, const char *str) {
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static int write_options(FILE *f, const char *options) {
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_cleanup_free_ char *o = NULL;
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assert(f);
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if (isempty(options))
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return 0;
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@ -208,6 +210,9 @@ static int write_options(FILE *f, const char *options) {
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static int write_what(FILE *f, const char *what) {
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_cleanup_free_ char *w = NULL;
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assert(f);
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assert(what);
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w = specifier_escape(what);
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if (!w)
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return log_oom();
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@ -324,25 +329,30 @@ static int write_timeout(
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const char *where,
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const char *opts,
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const char *filter,
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const char *variable) {
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const char *unit_setting) {
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_cleanup_free_ char *timeout = NULL;
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usec_t u;
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int r;
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assert(f);
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assert(where);
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assert(filter);
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assert(unit_setting);
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r = fstab_filter_options(opts, filter, NULL, &timeout, NULL, NULL);
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if (r < 0)
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return log_warning_errno(r, "Failed to parse options: %m");
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return log_error_errno(r, "Failed to parse options for '%s': %m", where);
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if (r == 0)
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return 0;
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r = parse_sec_fix_0(timeout, &u);
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if (r < 0) {
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log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout);
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log_warning_errno(r, "Failed to parse timeout '%s' for '%s', ignoring: %m", timeout, where);
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return 0;
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}
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fprintf(f, "%s=%s\n", variable, FORMAT_TIMESPAN(u, 0));
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fprintf(f, "%s=%s\n", unit_setting, FORMAT_TIMESPAN(u, 0));
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return 0;
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}
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@ -359,114 +369,118 @@ static int write_mount_timeout(FILE *f, const char *where, const char *opts) {
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static int write_dependency(
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FILE *f,
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const char *where,
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const char *opts,
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const char *filter,
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const char *format) {
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const char* const *unit_settings) {
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_cleanup_strv_free_ char **names = NULL, **units = NULL;
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_cleanup_free_ char *res = NULL;
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_cleanup_strv_free_ char **unit_names = NULL;
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_cleanup_free_ char *units = NULL;
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int r;
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assert(f);
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assert(opts);
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assert(filter);
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assert(unit_settings);
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r = fstab_filter_options(opts, filter, NULL, NULL, &names, NULL);
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r = fstab_filter_options(opts, filter, NULL, NULL, &unit_names, NULL);
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if (r < 0)
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return log_warning_errno(r, "Failed to parse options: %m");
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return log_error_errno(r, "Failed to parse options for '%s': %m", where);
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if (r == 0)
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return 0;
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STRV_FOREACH(s, names) {
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char *x;
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STRV_FOREACH(s, unit_names) {
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_cleanup_free_ char *mangled = NULL;
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r = unit_name_mangle_with_suffix(*s, "as dependency", 0, ".mount", &x);
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r = unit_name_mangle_with_suffix(*s, "as dependency", 0, ".mount", &mangled);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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return log_error_errno(r, "Failed to generate dependency unit name for '%s': %m", where);
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r = strv_consume(&units, x);
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if (r < 0)
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if (!strextend_with_separator(&units, " ", mangled))
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return log_oom();
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}
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if (units) {
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res = strv_join(units, " ");
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if (!res)
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return log_oom();
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DISABLE_WARNING_FORMAT_NONLITERAL;
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fprintf(f, format, res);
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REENABLE_WARNING;
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}
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STRV_FOREACH(setting, unit_settings)
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fprintf(f, "%s=%s\n", *setting, units);
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return 0;
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}
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static int write_after(FILE *f, const char *opts) {
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return write_dependency(f, opts,
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"x-systemd.after\0", "After=%1$s\n");
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static int write_after(FILE *f, const char *where, const char *opts) {
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return write_dependency(f, where, opts,
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"x-systemd.after\0", STRV_MAKE_CONST("After"));
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}
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static int write_requires_after(FILE *f, const char *opts) {
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return write_dependency(f, opts,
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"x-systemd.requires\0", "After=%1$s\nRequires=%1$s\n");
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static int write_requires_after(FILE *f, const char *where, const char *opts) {
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return write_dependency(f, where, opts,
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"x-systemd.requires\0", STRV_MAKE_CONST("Requires", "After"));
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}
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static int write_before(FILE *f, const char *opts) {
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return write_dependency(f, opts,
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"x-systemd.before\0", "Before=%1$s\n");
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static int write_before(FILE *f, const char *where, const char *opts) {
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return write_dependency(f, where, opts,
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"x-systemd.before\0", STRV_MAKE_CONST("Before"));
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}
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static int write_mounts_for(const char *x_opt, const char *unit_setting, FILE *f, const char *opts) {
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static int write_mounts_for(
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FILE *f,
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const char *where,
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const char *opts,
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const char *filter,
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const char *unit_setting) {
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_cleanup_strv_free_ char **paths = NULL, **paths_escaped = NULL;
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_cleanup_free_ char *res = NULL;
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int r;
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assert(x_opt);
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assert(unit_setting);
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assert(f);
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assert(opts);
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assert(where);
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assert(filter);
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assert(unit_setting);
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r = fstab_filter_options(opts, x_opt, NULL, NULL, &paths, NULL);
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r = fstab_filter_options(opts, filter, NULL, NULL, &paths, NULL);
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if (r < 0)
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return log_warning_errno(r, "Failed to parse options: %m");
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return log_error_errno(r, "Failed to parse options for '%s': %m", where);
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if (r == 0)
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return 0;
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r = specifier_escape_strv(paths, &paths_escaped);
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if (r < 0)
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return log_error_errno(r, "Failed to escape paths: %m");
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return log_error_errno(r, "Failed to escape paths for '%s': %m", where);
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res = strv_join(paths_escaped, " ");
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if (!res)
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return log_oom();
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fprintf(f, "%s=%s\n", unit_setting, res);
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fprintf(f, "%s=", unit_setting);
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fputstrv(f, paths_escaped, NULL, NULL);
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fputc('\n', f);
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return 0;
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}
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static int write_extra_dependencies(FILE *f, const char *opts) {
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static int write_extra_dependencies(FILE *f, const char *where, const char *opts) {
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int r;
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assert(f);
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if (opts) {
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r = write_after(f, opts);
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if (isempty(opts))
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return 0;
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r = write_after(f, where, opts);
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if (r < 0)
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return r;
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r = write_requires_after(f, opts);
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r = write_requires_after(f, where, opts);
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if (r < 0)
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return r;
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r = write_before(f, opts);
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r = write_before(f, where, opts);
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if (r < 0)
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return r;
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r = write_mounts_for("x-systemd.requires-mounts-for\0", "RequiresMountsFor", f, opts);
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r = write_mounts_for(f, where, opts,
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"x-systemd.requires-mounts-for\0", "RequiresMountsFor");
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if (r < 0)
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return r;
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r = write_mounts_for("x-systemd.wants-mounts-for\0", "WantsMountsFor", f, opts);
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r = write_mounts_for(f, where, opts,
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"x-systemd.wants-mounts-for\0", "WantsMountsFor");
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if (r < 0)
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return r;
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}
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return 0;
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}
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@ -481,17 +495,13 @@ static int mandatory_mount_drop_unapplicable_options(
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assert(flags);
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assert(where);
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assert(options);
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assert(ret_options);
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if (!(*flags & (MOUNT_NOAUTO|MOUNT_NOFAIL|MOUNT_AUTOMOUNT))) {
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_cleanup_free_ char *opts = NULL;
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r = strdup_or_null(options, ret_options);
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if (r < 0)
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return r;
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opts = strdup(options);
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if (!opts)
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return -ENOMEM;
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*ret_options = TAKE_PTR(opts);
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return 0;
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}
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@ -527,7 +537,6 @@ static int add_mount(
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assert(what);
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assert(where);
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assert(opts);
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assert(target_unit);
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assert(source);
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@ -556,16 +565,16 @@ static int add_mount(
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if (r < 0)
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return r;
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if (path_equal(where, "/")) {
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if (PATH_IN_SET(where, "/", "/usr")) {
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r = mandatory_mount_drop_unapplicable_options(&flags, where, opts, &opts_root_filtered);
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if (r < 0)
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return r;
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opts = opts_root_filtered;
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if (!strv_isempty(wanted_by))
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log_debug("Ignoring 'x-systemd.wanted-by=' option for root device.");
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log_debug("Ignoring 'x-systemd.wanted-by=' option for root/usr device.");
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if (!strv_isempty(required_by))
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log_debug("Ignoring 'x-systemd.required-by=' option for root device.");
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log_debug("Ignoring 'x-systemd.required-by=' option for root/usr device.");
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required_by = strv_free(required_by);
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wanted_by = strv_free(wanted_by);
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@ -611,7 +620,7 @@ static int add_mount(
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f);
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}
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r = write_extra_dependencies(f, opts);
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r = write_extra_dependencies(f, where, opts);
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if (r < 0)
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return r;
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@ -840,6 +849,9 @@ static int add_sysusr_sysroot_usr_bind_mount(const char *source) {
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static MountPointFlags fstab_options_to_flags(const char *options, bool is_swap) {
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MountPointFlags flags = 0;
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|
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if (isempty(options))
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return 0;
|
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|
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if (fstab_test_option(options, "x-systemd.makefs\0"))
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flags |= MOUNT_MAKEFS;
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if (fstab_test_option(options, "x-systemd.growfs\0"))
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@ -915,7 +927,6 @@ static int parse_fstab_one(
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assert(what_original);
|
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assert(fstype);
|
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assert(options);
|
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|
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if (prefix_sysroot && !mount_in_initrd(where_original, options, accept_root))
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return 0;
|
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@ -1587,7 +1598,7 @@ static int determine_usr(void) {
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* with /sysroot/etc/fstab available, and then we can write additional units based
|
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* on that file. */
|
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static int run_generator(void) {
|
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int r = 0;
|
||||
int r;
|
||||
|
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r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
|
||||
if (r < 0)
|
||||
|
||||
@ -537,7 +537,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
|
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assert(f);
|
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|
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ORDERED_SET_FOREACH(p, static_domains)
|
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fputs_with_space(f, p, NULL, &space);
|
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fputs_with_separator(f, p, NULL, &space);
|
||||
|
||||
if (use_domains == DHCP_USE_DOMAINS_NO)
|
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return;
|
||||
@ -547,7 +547,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
|
||||
char **domains;
|
||||
|
||||
if (sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname) >= 0)
|
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fputs_with_space(f, domainname, NULL, &space);
|
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fputs_with_separator(f, domainname, NULL, &space);
|
||||
if (sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains) >= 0)
|
||||
fputstrv(f, domains, NULL, &space);
|
||||
}
|
||||
@ -563,7 +563,7 @@ static void link_save_domains(Link *link, FILE *f, OrderedSet *static_domains, D
|
||||
NDiscDNSSL *dd;
|
||||
|
||||
SET_FOREACH(dd, link->ndisc_dnssl)
|
||||
fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
|
||||
fputs_with_separator(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
|
||||
}
|
||||
}
|
||||
|
||||
@ -652,7 +652,7 @@ static int link_save(Link *link) {
|
||||
if (!escaped)
|
||||
return -ENOMEM;
|
||||
|
||||
fputs_with_space(f, escaped, ":", &space);
|
||||
fputs_with_separator(f, escaped, ":", &space);
|
||||
}
|
||||
fputs("\"\n", f);
|
||||
|
||||
@ -782,7 +782,7 @@ static int link_save(Link *link) {
|
||||
fputs("DNSSEC_NTA=", f);
|
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space = false;
|
||||
SET_FOREACH(n, nta_anchors)
|
||||
fputs_with_space(f, n, NULL, &space);
|
||||
fputs_with_separator(f, n, NULL, &space);
|
||||
fputc('\n', f);
|
||||
}
|
||||
}
|
||||
|
||||
@ -148,16 +148,16 @@ int fstab_filter_options(
|
||||
char ***ret_values,
|
||||
char **ret_filtered) {
|
||||
|
||||
const char *namefound = NULL, *x;
|
||||
_cleanup_strv_free_ char **stor = NULL, **values = NULL;
|
||||
_cleanup_free_ char *value = NULL, **filtered = NULL;
|
||||
_cleanup_strv_free_ char **values = NULL;
|
||||
_cleanup_free_ char *value = NULL, *filtered = NULL;
|
||||
const char *namefound = NULL;
|
||||
int r;
|
||||
|
||||
assert(names && *names);
|
||||
assert(!isempty(names));
|
||||
assert(!(ret_value && ret_values));
|
||||
|
||||
if (!opts)
|
||||
goto answer;
|
||||
goto finish;
|
||||
|
||||
/* Finds any options matching 'names', and returns:
|
||||
* - the last matching option name in ret_namefound,
|
||||
@ -169,50 +169,49 @@ int fstab_filter_options(
|
||||
*
|
||||
* Returns negative on error, true if any matching options were found, false otherwise. */
|
||||
|
||||
if (ret_filtered || ret_value || ret_values) {
|
||||
if (ret_value || ret_values || ret_filtered) {
|
||||
_cleanup_strv_free_ char **opts_split = NULL;
|
||||
_cleanup_free_ char **filtered_strv = NULL; /* strings are owned by 'opts_split' */
|
||||
|
||||
/* For backwards compatibility, we need to pass-through escape characters.
|
||||
* The only ones we "consume" are the ones used as "\," or "\\". */
|
||||
r = strv_split_full(&stor, opts, ",", EXTRACT_UNESCAPE_SEPARATORS | EXTRACT_UNESCAPE_RELAX);
|
||||
r = strv_split_full(&opts_split, opts, ",", EXTRACT_UNESCAPE_SEPARATORS|EXTRACT_UNESCAPE_RELAX);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
filtered = memdup(stor, sizeof(char*) * (strv_length(stor) + 1));
|
||||
if (!filtered)
|
||||
return -ENOMEM;
|
||||
STRV_FOREACH(opt, opts_split) {
|
||||
bool found = false;
|
||||
const char *x;
|
||||
|
||||
char **t = filtered;
|
||||
for (char **s = t; *s; s++) {
|
||||
NULSTR_FOREACH(name, names) {
|
||||
x = startswith(*s, name);
|
||||
x = startswith(*opt, name);
|
||||
if (!x)
|
||||
continue;
|
||||
/* Match name, but when ret_values, only when followed by assignment. */
|
||||
|
||||
/* If ret_values, only accept settings followed by assignment. */
|
||||
if (*x == '=' || (!ret_values && *x == '\0')) {
|
||||
/* Keep the last occurrence found */
|
||||
namefound = name;
|
||||
goto found;
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
*t = *s;
|
||||
t++;
|
||||
continue;
|
||||
found:
|
||||
if (ret_value || ret_values) {
|
||||
assert(IN_SET(*x, '=', '\0'));
|
||||
|
||||
if (ret_value) {
|
||||
if (found) {
|
||||
if (ret_value)
|
||||
r = free_and_strdup(&value, *x == '=' ? x + 1 : NULL);
|
||||
if (r < 0)
|
||||
return r;
|
||||
} else if (*x) {
|
||||
else if (ret_values)
|
||||
r = strv_extend(&values, x + 1);
|
||||
else
|
||||
r = 0;
|
||||
} else
|
||||
r = strv_push(&filtered_strv, *opt);
|
||||
if (r < 0)
|
||||
return r;
|
||||
}
|
||||
}
|
||||
}
|
||||
*t = NULL;
|
||||
|
||||
filtered = strv_join_full(filtered_strv, ",", NULL, /* escape_separator = */ true);
|
||||
if (!filtered)
|
||||
return -ENOMEM;
|
||||
} else
|
||||
for (const char *word = opts;;) {
|
||||
const char *end = word;
|
||||
@ -232,7 +231,7 @@ int fstab_filter_options(
|
||||
}
|
||||
|
||||
NULSTR_FOREACH(name, names) {
|
||||
x = startswith(word, name);
|
||||
const char *x = startswith(word, name);
|
||||
if (!x || x > end)
|
||||
continue;
|
||||
|
||||
@ -249,39 +248,32 @@ int fstab_filter_options(
|
||||
word = end + 1;
|
||||
}
|
||||
|
||||
answer:
|
||||
finish:
|
||||
if (ret_namefound)
|
||||
*ret_namefound = namefound;
|
||||
if (ret_filtered) {
|
||||
char *f;
|
||||
|
||||
f = strv_join_full(filtered, ",", NULL, true);
|
||||
if (!f)
|
||||
return -ENOMEM;
|
||||
|
||||
*ret_filtered = f;
|
||||
}
|
||||
*ret_namefound = namefound; /* owned by 'names' (passed-in) */
|
||||
if (ret_value)
|
||||
*ret_value = TAKE_PTR(value);
|
||||
if (ret_values)
|
||||
*ret_values = TAKE_PTR(values);
|
||||
if (ret_filtered)
|
||||
*ret_filtered = TAKE_PTR(filtered);
|
||||
|
||||
return !!namefound;
|
||||
}
|
||||
|
||||
int fstab_find_pri(const char *options, int *ret) {
|
||||
_cleanup_free_ char *opt = NULL;
|
||||
int fstab_find_pri(const char *opts, int *ret) {
|
||||
_cleanup_free_ char *v = NULL;
|
||||
int r, pri;
|
||||
|
||||
assert(ret);
|
||||
|
||||
r = fstab_filter_options(options, "pri\0", NULL, &opt, NULL, NULL);
|
||||
r = fstab_filter_options(opts, "pri\0", NULL, &v, NULL, NULL);
|
||||
if (r < 0)
|
||||
return r;
|
||||
if (r == 0 || !opt)
|
||||
if (r == 0 || !v)
|
||||
return 0;
|
||||
|
||||
r = safe_atoi(opt, &pri);
|
||||
r = safe_atoi(v, &pri);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
|
||||
@ -32,23 +32,20 @@ int fstab_filter_options(
|
||||
char **ret_value,
|
||||
char ***ret_values,
|
||||
char **ret_filtered);
|
||||
|
||||
static inline bool fstab_test_option(const char *opts, const char *names) {
|
||||
return !!fstab_filter_options(opts, names, NULL, NULL, NULL, NULL);
|
||||
return fstab_filter_options(opts, names, NULL, NULL, NULL, NULL);
|
||||
}
|
||||
|
||||
int fstab_find_pri(const char *options, int *ret);
|
||||
|
||||
static inline bool fstab_test_yes_no_option(const char *opts, const char *yes_no) {
|
||||
const char *opt;
|
||||
const char *opt_found;
|
||||
|
||||
/* If first name given is last, return 1.
|
||||
* If second name given is last or neither is found, return 0. */
|
||||
|
||||
assert_se(fstab_filter_options(opts, yes_no, &opt, NULL, NULL, NULL) >= 0);
|
||||
assert_se(fstab_filter_options(opts, yes_no, &opt_found, NULL, NULL, NULL) >= 0);
|
||||
|
||||
return opt == yes_no;
|
||||
return opt_found == yes_no;
|
||||
}
|
||||
int fstab_find_pri(const char *opts, int *ret);
|
||||
|
||||
char *fstab_node_to_udev_node(const char *p);
|
||||
|
||||
|
||||
@ -116,7 +116,7 @@ TEST(fstab_filter_options) {
|
||||
do_fstab_filter_options(" opt ", "opt\0x-opt\0", 0, 0, NULL, NULL, "", NULL);
|
||||
|
||||
/* check function with NULL args */
|
||||
do_fstab_filter_options(NULL, "opt\0", 0, 0, NULL, NULL, "", "");
|
||||
do_fstab_filter_options(NULL, "opt\0", 0, 0, NULL, NULL, "", NULL);
|
||||
do_fstab_filter_options("", "opt\0", 0, 0, NULL, NULL, "", "");
|
||||
|
||||
/* unnecessary comma separators */
|
||||
|
||||
@ -148,7 +148,7 @@ check_fstab_mount_units() {
|
||||
fi
|
||||
if [[ -n "$opts" ]] && [[ "$opts" != defaults ]]; then
|
||||
# Some options are not propagated to the generated unit
|
||||
if [[ "$where" == / ]]; then
|
||||
if [[ "$where" == / || "$where" == /usr ]]; then
|
||||
filtered_options="$(opt_filter "$opts" "(noauto|nofail|x-systemd.(wanted-by=|required-by=|automount|device-timeout=))")"
|
||||
else
|
||||
filtered_options="$(opt_filter "$opts" "^x-systemd.device-timeout=")"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user