diff --git a/book/src/kernel/linux-compatibility/README.md b/book/src/kernel/linux-compatibility/README.md
index 096480db4..545727416 100644
--- a/book/src/kernel/linux-compatibility/README.md
+++ b/book/src/kernel/linux-compatibility/README.md
@@ -208,9 +208,9 @@ which are summarized in the table below.
 | 185     | security               | ❌             | N/A |
 | 186     | gettid                 | ✅             | 💯 |
 | 187     | readahead              | ❌             | N/A |
-| 188     | setxattr               | ✅             | ❓ |
-| 189     | lsetxattr              | ✅             | ❓ |
-| 190     | fsetxattr              | ✅             | ❓ |
+| 188     | setxattr               | ✅             | 💯 |
+| 189     | lsetxattr              | ✅             | 💯 |
+| 190     | fsetxattr              | ✅             | 💯 |
 | 191     | getxattr               | ✅             | 💯 |
 | 192     | lgetxattr              | ✅             | 💯 |
 | 193     | fgetxattr              | ✅             | 💯 |
@@ -302,14 +302,14 @@ which are summarized in the table below.
 | 279     | move_pages             | ❌             | N/A |
 | 280     | utimensat              | ✅             | ❓ |
 | 281     | epoll_pwait            | ✅             | ❓ |
-| 282     | signalfd               | ✅             | ❓ |
+| 282     | signalfd               | ✅             | 💯 |
 | 283     | timerfd_create         | ✅             | ❓ |
 | 284     | eventfd                | ✅             | 💯 |
 | 285     | fallocate              | ✅             | ❓ |
 | 286     | timerfd_settime        | ✅             | ❓ |
 | 287     | timerfd_gettime        | ✅             | 💯 |
 | 288     | accept4                | ✅             | ❓ |
-| 289     | signalfd4              | ✅             | ❓ |
+| 289     | signalfd4              | ✅             | 💯 |
 | 290     | eventfd2               | ✅             | [⚠️](syscall-flag-coverage/file-descriptor-and-io-control/#eventfd-and-eventfd2) |
 | 291     | epoll_create1          | ✅             | ❓ |
 | 292     | dup3                   | ✅             | 💯 |
diff --git a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/fully_covered.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/fully_covered.scml
index 2d34addb9..3ca98430f 100644
--- a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/fully_covered.scml
+++ b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/fully_covered.scml
@@ -95,6 +95,13 @@ getxattr(path, name, value, size);
 lgetxattr(path, name, value, size);
 fgetxattr(fd, name, value, size);
 
+xattr_flags = XATTR_CREATE | XATTR_REPLACE;
+
+// Set an extended attribute value
+setxattr(path, name, value, size, flags = <xattr_flags>);
+lsetxattr(path, name, value, size, flags = <xattr_flags>);
+fsetxattr(fd, name, value, size, flags = <xattr_flags>);
+
 // List extended attribute names
 listxattr(path, list, size);
 llistxattr(path, list, size);
diff --git a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-descriptor-and-io-control/fully_covered.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-descriptor-and-io-control/fully_covered.scml
index 65b057193..1081aa83d 100644
--- a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-descriptor-and-io-control/fully_covered.scml
+++ b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-descriptor-and-io-control/fully_covered.scml
@@ -18,3 +18,7 @@ fdatasync(fd);
 
 // Open an epoll file descriptor
 epoll_create(size);
+
+// Create a file descriptor for accepting signals
+signalfd(fd, mask, sizemask);
+signalfd4(fd, mask, sizemask, flags = SFD_NONBLOCK | SFD_CLOEXEC);