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From 4c00ec8773fd63fa48ef49e1ccf2adac598427be Mon Sep 17 00:00:00 2001
From: Alejandro Alvarado <44826516+seisvelas@users.noreply.github.com>
Date: Mon, 17 Dec 2018 19:25:18 -0600
Subject: Add getdents / getdents64 support re ticket 28861
---
src/common/compat.h | 8 ++++++++
src/lib/syscall.c | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/src/common/compat.h b/src/common/compat.h
index a9b73c2..d79301f 100644
--- a/src/common/compat.h
+++ b/src/common/compat.h
@@ -129,6 +129,12 @@ void tsocks_once(tsocks_once_t *o, void (*init_routine)(void));
#ifndef __NR_memfd_create
#define __NR_memfd_create -19
#endif
+#ifndef __NR_getdents
+#define __NR_getdents -20
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64 -21
+#endif
#define TSOCKS_NR_SOCKET __NR_socket
#define TSOCKS_NR_CONNECT __NR_connect
@@ -149,6 +155,8 @@ void tsocks_once(tsocks_once_t *o, void (*init_routine)(void));
#define TSOCKS_NR_CLOCK_GETTIME __NR_clock_gettime
#define TSOCKS_NR_FORK __NR_fork
#define TSOCKS_NR_MEMFD_CREATE __NR_memfd_create
+#define TSOCKS_NR_GETDENTS __NR_getdents
+#define TSOCKS_NR_GETDENTS64 __NR_getdents64
/*
* Despite glibc providing wrappers for these calls for a long time
diff --git a/src/lib/syscall.c b/src/lib/syscall.c
index 7fba580..f793da7 100644
--- a/src/lib/syscall.c
+++ b/src/lib/syscall.c
@@ -437,6 +437,37 @@ static LIBC_SYSCALL_RET_TYPE handle_memfd_create(va_list args)
return tsocks_libc_syscall(TSOCKS_NR_MEMFD_CREATE, name, flags);
}
+/*
+ * Handle getdents(2) syscall.
+ */
+static LIBC_SYSCALL_RET_TYPE handle_getdents(va_list args)
+{
+ unsigned int fd;
+ struct linux_dirent *dirp;
+ unsigned int count;
+
+ fd = va_arg(args, __typeof__(fd));
+ dirp = va_arg(args, __typeof__(dirp));
+ count = va_arg(args, __typeof__(count));
+
+ return tsocks_libc_syscall(TSOCKS_NR_GETDENTS, fd, dirp, count);
+}
+/*
+ * Handle getdents64(2) syscall.
+ */
+static LIBC_SYSCALL_RET_TYPE handle_getdents64(va_list args)
+{
+ unsigned int fd;
+ struct linux_dirent64 *dirp;
+ unsigned int count;
+
+ fd = va_arg(args, __typeof__(fd));
+ dirp = va_arg(args, __typeof__(dirp));
+ count = va_arg(args, __typeof__(count));
+
+ return tsocks_libc_syscall(TSOCKS_NR_GETDENTS64, fd, dirp, count);
+}
+
#endif /* __linux__ */
/*
@@ -558,6 +589,12 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int number, va_list args)
case TSOCKS_NR_MEMFD_CREATE:
ret = handle_memfd_create(args);
break;
+ case TSOCKS_NR_GETDENTS:
+ ret = handle_getdents(args);
+ break;
+ case TSOCKS_NR_GETDENTS64:
+ ret = handle_getdents64(args);
+ break;
#endif /* __linux__ */
default:
/*
--
cgit v1.1
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