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Added dup(2).

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This commit is contained in:
Jonas 'Sortie' Termansen 2011-11-17 20:34:04 +01:00
parent 5bde040295
commit 05196f49b2
4 changed files with 17 additions and 2 deletions
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2
libmaxsi/c/hsrc/unistd.h
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@ -84,7 +84,6 @@ int close(int);
size_t confstr(int, char*, size_t);
char* crypt(const char*, const char*);
char* ctermid(char*);
int dup(int);
int dup2(int, int);
void encrypt(char [64], int);
int execl(const char*, const char*, ...);
@ -159,6 +158,7 @@ extern char* optarg;
extern int opterr, optind, optopt;
#endif
int dup(int);
void _exit(int);
pid_t fork(void);
pid_t getpid(void);

5
libmaxsi/io.cpp
View file

@ -33,6 +33,7 @@ namespace Maxsi
DEFN_SYSCALL3(ssize_t, SysRead, 18, int, void*, size_t);
DEFN_SYSCALL3(ssize_t, SysWrite, 19, int, const void*, size_t);
DEFN_SYSCALL1(int, SysPipe, 20, int*);
DEFN_SYSCALL1(int, SysDup, 21, int);
size_t Print(const char* Message)
{
@ -78,6 +79,10 @@ namespace Maxsi
return SysPipe(pipefd);
}
extern "C" int dup(int fd)
{
return SysDup(fd);
}
#endif
}

9
sortix/io.cpp
View file

@ -117,10 +117,19 @@ namespace Sortix
return 0;
}
int SysDup(int fd)
{
Process* process = CurrentProcess();
Device* dev = process->descriptors.Get(fd);
if ( !dev ) { return -1; /* TODO: EBADF */ }
return process->descriptors.Allocate(dev);
}
void Init()
{
Syscall::Register(SYSCALL_WRITE, (void*) SysWrite);
Syscall::Register(SYSCALL_READ, (void*) SysRead);
Syscall::Register(SYSCALL_DUP, (void*) SysDup);
}
}
}

3
sortix/syscallnum.h
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@ -46,7 +46,8 @@
#define SYSCALL_READ 18
#define SYSCALL_WRITE 19
#define SYSCALL_PIPE 20
#define SYSCALL_MAX_NUM 21 /* index of highest constant + 1 */
#define SYSCALL_DUP 21
#define SYSCALL_MAX_NUM 22 /* index of highest constant + 1 */
#endif