Add structs 'flock' and 'flock64' to "bits/fcntl.h"

The arch-specific file needs to provide this, according to
"linux/bits/fcntl-linux.h".  "linux/generic/bits/fcntl.h" used to provide this
for RISC-V.

Another way to achieve the same result might be to include
"linux/generic/bits/fcntl.h" from RISC-V's own "bits/fcntl.h", but 'flock' is
defined a bit differently (it will possibly be even more different in the
128-bit implementation) and it's not guarded by "ifndef" in
"linux/generic/bits/fcntl.h".

1 files changed, 25 insertions, 0 deletions

diff --git a/glibc/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h b/glibc/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
index 6a00f26..8a166f6 100644
--- a/glibc/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
+++ b/glibc/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
@@ -32,5 +32,30 @@
 # define F_SETLKW64	7	/* Set record locking info (blocking).	*/
 #endif
 
+struct flock
+  {
+    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+#if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
+    __off_t l_start;    /* Offset where the lock begins.  */
+    __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
+#else
+    __off64_t l_start;  /* Offset where the lock begins.  */
+    __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
+#endif
+    __pid_t l_pid;      /* Process holding the lock.  */
+  };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+  {
+    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+    __off64_t l_start;  /* Offset where the lock begins.  */
+    __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
+    __pid_t l_pid;      /* Process holding the lock.  */
+  };
+#endif
+
 /* Include generic Linux declarations.  */
 #include <bits/fcntl-linux.h>