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Add close-on-exec flag for file descriptors.

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I was surprised to find that dup()'ed fds don't share the close-on-exec flag.
That means it has to be stored separately from the FileDescriptor object.
This commit is contained in:
Andreas Kling 2018-11-13 01:36:31 +01:00
parent 19b9401487
commit 97c799576a
10 changed files with 74 additions and 35 deletions
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1
VirtualFileSystem/FileDescriptor.cpp
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@ -51,7 +51,6 @@ RetainPtr<FileDescriptor> FileDescriptor::clone()
descriptor->m_currentOffset = m_currentOffset;
#ifdef SERENITY
descriptor->m_isBlocking = m_isBlocking;
descriptor->m_fd_flags = m_fd_flags;
descriptor->m_file_flags = m_file_flags;
#endif
return descriptor;

6
VirtualFileSystem/FileDescriptor.h
View file

@ -53,10 +53,7 @@ public:
void setBlocking(bool b) { m_isBlocking = b; }
dword file_flags() const { return m_file_flags; }
int set_file_flags(dword flags) { m_file_flags = flags; return 0; }
dword fd_flags() const { return m_fd_flags; }
int set_fd_flags(dword flags) { m_fd_flags = flags; return 0; }
void set_file_flags(dword flags) { m_file_flags = flags; }
bool is_fifo() const { return m_fifo; }
FIFO::Direction fifo_direction() { return m_fifo_direction; }
@ -77,7 +74,6 @@ private:
#ifdef SERENITY
bool m_isBlocking { true };
dword m_fd_flags { 0 };
dword m_file_flags { 0 };
RetainPtr<FIFO> m_fifo;

2
VirtualFileSystem/UnixTypes.h
View file

@ -25,6 +25,8 @@ namespace Unix {
#define F_GETFL 3
#define F_SETFL 4
#define FD_CLOEXEC 1
/* c_cc characters */
#define VINTR 0
#define VQUIT 1

7
VirtualFileSystem/VirtualFileSystem.h
View file

@ -14,8 +14,15 @@
#define O_RDONLY 0
#define O_WRONLY 1
#define O_RDWR 2
#define O_CREAT 0100
#define O_EXCL 0200
#define O_NOCTTY 0400
#define O_TRUNC 01000
#define O_APPEND 02000
#define O_NONBLOCK 04000
#define O_DIRECTORY 00200000
#define O_NOFOLLOW 00400000
#define O_CLOEXEC 02000000
#define O_NOFOLLOW_NOERROR 0x4000000
class CharacterDevice;