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207 lines
8.5 KiB
207 lines
8.5 KiB
From d23386f61d810dab77e9d9d9130adbd826ea823f Mon Sep 17 00:00:00 2001 |
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From: Michal Sekletar <msekleta@redhat.com> |
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Date: Thu, 7 Sep 2017 15:49:08 +0200 |
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Subject: [PATCH] tmpfiles: substitute % specifiers in arguments for writing |
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files and xattrs |
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(cherry-picked from commit bd550f78eb261c757cbff85acdb55563c56521f2) |
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Related: #1299714 |
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--- |
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src/tmpfiles/tmpfiles.c | 79 ++++++++++++++++++++++++++----------------------- |
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1 file changed, 42 insertions(+), 37 deletions(-) |
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diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c |
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index 70e0cc2fa..ddb274fce 100644 |
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--- a/src/tmpfiles/tmpfiles.c |
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+++ b/src/tmpfiles/tmpfiles.c |
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@@ -151,6 +151,14 @@ static const char conf_file_dirs[] = CONF_DIRS_NULSTR("tmpfiles"); |
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static Hashmap *items = NULL, *globs = NULL; |
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static Set *unix_sockets = NULL; |
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+static const Specifier specifier_table[] = { |
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+ { 'm', specifier_machine_id, NULL }, |
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+ { 'b', specifier_boot_id, NULL }, |
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+ { 'H', specifier_host_name, NULL }, |
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+ { 'v', specifier_kernel_release, NULL }, |
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+ {} |
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+}; |
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+ |
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static bool needs_glob(ItemType t) { |
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return IN_SET(t, |
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WRITE_FILE, |
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@@ -657,8 +665,7 @@ static int path_set_perms(Item *i, const char *path) { |
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return label_fix(path, false, false); |
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} |
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-static int get_xattrs_from_arg(Item *i) { |
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- char *xattr; |
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+static int parse_xattrs_from_arg(Item *i) { |
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const char *p; |
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int r; |
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@@ -667,35 +674,37 @@ static int get_xattrs_from_arg(Item *i) { |
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p = i->argument; |
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- while ((r = unquote_first_word(&p, &xattr, false)) > 0) { |
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- _cleanup_free_ char *tmp = NULL, *name = NULL, |
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- *value = NULL, *value2 = NULL, *_xattr = xattr; |
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+ for (;;) { |
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+ _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL, *xattr_replaced = NULL; |
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+ |
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+ r = unquote_first_word(&p, &xattr, false); |
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+ if (r < 0) |
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+ log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); |
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+ if (r <= 0) |
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+ break; |
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+ |
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+ r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced); |
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+ if (r < 0) |
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+ return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr); |
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- r = split_pair(xattr, "=", &name, &value); |
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+ r = split_pair(xattr_replaced, "=", &name, &value); |
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if (r < 0) { |
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log_warning("Illegal xattr found: \"%s\" - ignoring.", xattr); |
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continue; |
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} |
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- if (strempty(name) || strempty(value)) { |
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- log_warning("Malformed xattr found: \"%s\" - ignoring.", xattr); |
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+ if (isempty(name) || isempty(value)) { |
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+ log_warning("Malformed extended attribute found, ignoring: %s", xattr); |
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continue; |
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} |
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- tmp = unquote(value, "\""); |
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- if (!tmp) |
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- return log_oom(); |
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- |
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- value2 = cunescape(tmp); |
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- if (!value2) |
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+ if (strv_push_pair(&i->xattrs, name, value) < 0) |
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return log_oom(); |
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- if (strv_push_pair(&i->xattrs, name, value2) < 0) |
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- return log_oom(); |
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- name = value2 = NULL; |
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+ name = value = NULL; |
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} |
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- return r; |
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+ return 0; |
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} |
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static int path_set_xattrs(Item *i, const char *path) { |
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@@ -708,17 +717,16 @@ static int path_set_xattrs(Item *i, const char *path) { |
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int n; |
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n = strlen(*value); |
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- log_debug("\"%s\": setting xattr \"%s=%s\"", path, *name, *value); |
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+ log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); |
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if (lsetxattr(path, *name, *value, n, 0) < 0) { |
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- log_error("Setting extended attribute %s=%s on %s failed: %m", |
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- *name, *value, path); |
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+ log_error("Setting extended attribute %s=%s on %s failed: %m", *name, *value, path); |
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return -errno; |
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} |
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} |
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return 0; |
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} |
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-static int get_acls_from_arg(Item *item) { |
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+static int parse_acls_from_arg(Item *item) { |
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#ifdef HAVE_ACL |
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int r; |
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@@ -726,6 +734,7 @@ static int get_acls_from_arg(Item *item) { |
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/* If force (= modify) is set, we will not modify the acl |
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* afterwards, so the mask can be added now if necessary. */ |
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+ |
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r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); |
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if (r < 0) |
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log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", |
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@@ -839,7 +848,7 @@ static int path_set_acls(Item *item, const char *path) { |
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FS_TOPDIR_FL | \ |
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FS_NOCOW_FL) |
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-static int get_attribute_from_arg(Item *item) { |
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+static int parse_attribute_from_arg(Item *item) { |
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static const struct { |
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char character; |
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@@ -993,7 +1002,7 @@ static int write_one_file(Item *i, const char *path) { |
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} |
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if (i->argument) { |
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- _cleanup_free_ char *unescaped; |
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+ _cleanup_free_ char *unescaped = NULL, *replaced = NULL; |
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log_debug("%s to \"%s\".", |
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i->type == CREATE_FILE ? "Appending" : "Writing", path); |
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@@ -1002,7 +1011,11 @@ static int write_one_file(Item *i, const char *path) { |
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if (!unescaped) |
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return log_oom(); |
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- r = loop_write(fd, unescaped, strlen(unescaped), false); |
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+ r = specifier_printf(unescaped, specifier_table, NULL, &replaced); |
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+ if (r < 0) |
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+ return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped); |
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+ |
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+ r = loop_write(fd, replaced, strlen(replaced), false); |
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if (r < 0) |
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return log_error_errno(r, "Failed to write file \"%s\": %m", path); |
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} else |
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@@ -1712,14 +1725,6 @@ static bool should_include_path(const char *path) { |
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static int parse_line(const char *fname, unsigned line, const char *buffer) { |
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- static const Specifier specifier_table[] = { |
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- { 'm', specifier_machine_id, NULL }, |
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- { 'b', specifier_boot_id, NULL }, |
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- { 'H', specifier_host_name, NULL }, |
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- { 'v', specifier_kernel_release, NULL }, |
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- {} |
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- }; |
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- |
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_cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; |
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_cleanup_(item_free_contents) Item i = {}; |
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ItemArray *existing; |
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@@ -1801,7 +1806,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { |
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case RELABEL_PATH: |
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case RECURSIVE_RELABEL_PATH: |
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if (i.argument) |
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- log_warning("[%s:%u] %c lines don't take argument field, ignoring.", fname, line, i.type); |
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+ log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type); |
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break; |
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@@ -1861,7 +1866,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { |
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log_error("[%s:%u] Set extended attribute requires argument.", fname, line); |
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return -EBADMSG; |
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} |
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- r = get_xattrs_from_arg(&i); |
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+ r = parse_xattrs_from_arg(&i); |
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if (r < 0) |
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return r; |
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break; |
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@@ -1872,7 +1877,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { |
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log_error("[%s:%u] Set ACLs requires argument.", fname, line); |
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return -EBADMSG; |
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} |
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- r = get_acls_from_arg(&i); |
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+ r = parse_acls_from_arg(&i); |
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if (r < 0) |
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return r; |
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break; |
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@@ -1883,7 +1888,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { |
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log_error("[%s:%u] Set file attribute requires argument.", fname, line); |
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return -EBADMSG; |
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} |
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- r = get_attribute_from_arg(&i); |
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+ r = parse_attribute_from_arg(&i); |
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if (r < 0) |
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return r; |
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break;
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