Added a dummy implementation rfork(2) equal to fork(2).
Note that in my implementation, you share per default, unless you ask.
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@ -32,6 +32,14 @@
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#include <sortix/seek.h>
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#include <sortix/unistd.h>
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/* BSD compatibility: The problem with RFMEM is that isn't default to share, but
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default to make a copy. However, Sortix rforks wants to make sharing default
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and forking only happens if you ask for it. The Sortix RFFMEM extension
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reverses this logic. */
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#if defined(RFMEM) && !defined(_BSD_SOURCE) && !defined(_WANT_RFMEM)
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#undef RFMEM
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#endif
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#define _SORTIX_ALWAYS_SBRK
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__BEGIN_DECLS
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@ -51,8 +59,6 @@ __BEGIN_DECLS
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@include(NULL.h)
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/* TODO: F_OK, R_OK, W_OK, X_OK is missing here. */
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/* TODO: _CS_* is missing here. */
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/* TODO: F_* is missing here. */
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@ -184,6 +190,7 @@ size_t pwriteall(int fd, const void* buf, size_t count, off_t off);
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size_t pwriteleast(int fd, const void* buf, size_t least, size_t max, off_t off);
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size_t readall(int fd, void* buf, size_t count);
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size_t readleast(int fd, void* buf, size_t least, size_t max);
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pid_t rfork(int flags);
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int uptime(uintmax_t* usecssinceboot);
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size_t writeall(int fd, const void* buf, size_t count);
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size_t writeleast(int fd, const void* buf, size_t least, size_t max);
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@ -35,6 +35,7 @@ namespace Maxsi
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DEFN_SYSCALL1_VOID(SysExit, SYSCALL_EXIT, int);
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DEFN_SYSCALL3(int, SysExecVE, SYSCALL_EXEC, const char*, char* const*, char* const*);
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DEFN_SYSCALL0(pid_t, SysFork, SYSCALL_FORK);
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DEFN_SYSCALL1(pid_t, SysRFork, SYSCALL_RFORK, int);
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DEFN_SYSCALL0(pid_t, SysGetPID, SYSCALL_GETPID);
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DEFN_SYSCALL0(pid_t, SysGetParentPID, SYSCALL_GETPPID);
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DEFN_SYSCALL3(pid_t, SysWait, SYSCALL_WAIT, pid_t, int*, int);
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@ -77,6 +78,11 @@ namespace Maxsi
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return SysFork();
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}
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extern "C" int rfork(int flags)
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{
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return SysRFork(flags);
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}
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DUAL_FUNCTION(pid_t, getpid, GetPID, ())
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{
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return SysGetPID();
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@ -74,7 +74,8 @@
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#define SYSCALL_KERNELINFO 48
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#define SYSCALL_PREAD 49
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#define SYSCALL_PWRITE 50
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#define SYSCALL_MAX_NUM 51 /* index of highest constant + 1 */
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#define SYSCALL_RFORK 51
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#define SYSCALL_MAX_NUM 52 /* index of highest constant + 1 */
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#endif
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@ -34,6 +34,17 @@ __BEGIN_DECLS
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#define X_OK 1 /* Test for execute permission. */
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#define F_OK 0 /* Test for existence. */
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#define RFCLONE (1<<0) /* Creates child, otherwise affect current process. */
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#define RFPID (1<<1) /* Allocates new PID. */
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#define RFFDG (1<<2) /* Fork file descriptor table. */
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#define RFMEM (1<<3) /* Shares address space. */
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#define RFFMEM (1<<4) /* Forks address space. */
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#define RFCWD (1<<5) /* Forks current directory pointer. */
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#define RFNS (1<<6) /* Forks namespace. */
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#define RFPROC (RFCLONE | RFPID | RFFMEM | RFCWD) /* Create new process. */
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#define RFFORK (RFPROC | RFFDG) /* Traditional fork(2) behavior. */
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__END_DECLS
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#endif
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@ -23,6 +23,7 @@
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******************************************************************************/
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#include <sortix/kernel/platform.h>
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#include <sortix/unistd.h>
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#include <libmaxsi/error.h>
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#include <libmaxsi/memory.h>
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#include <libmaxsi/string.h>
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@ -431,8 +432,11 @@ namespace Sortix
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return SysExevVEStage2(state);
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}
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pid_t SysFork()
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pid_t SysRFork(int flags)
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{
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// TODO: Properly support rfork(2).
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if ( flags != RFFORK ) { Error::Set(ENOSYS); return -1; }
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// Prepare the state of the clone.
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Syscall::SyscallRegs()->result = 0;
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CurrentThread()->SaveRegisters(Syscall::InterruptRegs());
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@ -443,6 +447,11 @@ namespace Sortix
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return clone->pid;
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}
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pid_t SysFork()
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{
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return SysRFork(RFFORK);
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}
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pid_t SysGetPID()
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{
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return CurrentProcess()->pid;
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@ -746,6 +755,7 @@ namespace Sortix
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{
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Syscall::Register(SYSCALL_EXEC, (void*) SysExecVE);
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Syscall::Register(SYSCALL_FORK, (void*) SysFork);
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Syscall::Register(SYSCALL_RFORK, (void*) SysRFork);
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Syscall::Register(SYSCALL_GETPID, (void*) SysGetPID);
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Syscall::Register(SYSCALL_GETPPID, (void*) SysGetParentPID);
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Syscall::Register(SYSCALL_EXIT, (void*) SysExit);
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