libposix: deep refactor; add sys/posixly command
With these changes, libposix (and newlib) can run MirBSD Korn Shell.
This commit is contained in:
@ -30,12 +30,18 @@
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* #include <u.h>
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* #include <posix.h>
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*
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* Defining _LIBPOSIX_H before the include allow you to just get dirent
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* definition.
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* Defining _LIBPOSIX_H before the include allow you to just get
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* data structure definition.
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*/
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#ifndef _LIBPOSIX_DIRENT
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#define _LIBPOSIX_DIRENT
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#ifndef _LIBPOSIX_DEF
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#define _LIBPOSIX_DEF
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struct timespec
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{
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long tv_sec;
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long tv_nsec;
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};
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/* dirent alias of stat(5) message.
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* We (ab)use the fact that both 9P and Jehanne are little endian.
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@ -75,13 +81,7 @@ struct __attribute__((__packed__)) dirent
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#define DT_SOCK 12
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#define DT_WHT 14
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#endif /* _LIBPOSIX_DIRENT */
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#ifndef _LIBPOSIX_H
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#define _LIBPOSIX_H
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typedef unsigned long clock_t;
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/* getrusage who */
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typedef enum PosixRUsages
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{
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PosixRUsageSelf = 0,
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@ -90,10 +90,170 @@ typedef enum PosixRUsages
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PosixRUsageUnknown = -1
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} PosixRUsages;
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/* errno values */
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#define _ERRNO_H // skip the Posix part, we just need the enum
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#include <apw/errno.h>
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/* signals */
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typedef unsigned long PosixSignalMask;
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typedef enum PosixSigProcMaskAction
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{
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PosixSPMSetMask = 0,
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PosixSPMBlock = 1,
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PosixSPMUnblock = 2
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} PosixSigProcMaskAction;
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#define PosixNumberOfSignals (sizeof(PosixSignalMask)*7)
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typedef enum PosixSignals
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{
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PosixSIGABRT = 1,
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PosixSIGALRM,
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PosixSIGBUS,
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PosixSIGCHLD,
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PosixSIGCONT,
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PosixSIGFPE,
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PosixSIGHUP,
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PosixSIGILL,
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PosixSIGINT,
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PosixSIGKILL,
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PosixSIGPIPE,
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PosixSIGQUIT,
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PosixSIGSEGV,
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PosixSIGSTOP,
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PosixSIGTERM,
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PosixSIGTSTP,
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PosixSIGTTIN,
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PosixSIGTTOU,
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PosixSIGUSR1,
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PosixSIGUSR2,
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PosixSIGPOLL,
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PosixSIGPROF,
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PosixSIGSYS,
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PosixSIGTRAP,
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PosixSIGURG,
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PosixSIGVTALRM,
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PosixSIGXCPU,
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PosixSIGXFSZ,
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/* Optional Signals */
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PosixSIGIOT,
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PosixSIGEMT,
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PosixSIGSTKFLT,
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PosixSIGIO,
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PosixSIGPWR,
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PosixSIGINFO,
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PosixSIGLOST,
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PosixSIGWINCH,
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PosixSIGUNUSED,
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PosixSIGRTMIN,
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PosixSIGRTMAX = PosixNumberOfSignals
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} PosixSignals;
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typedef enum PosixSigActionFlags
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{
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/* supported flags */
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PosixSAFSigInfo = 1<<0,
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PosixSAFRestart = 1<<1,
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PosixSAFNoChildrenStop = 1<<2,
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PosixSAFResetHandler = 1<<3,
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PosixSAFNoChildrenWait = 1<<4,
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/* ignored flags */
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PosixSAFNoDefer = 1<<16, /* notes are not reentrant */
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PosixSAFOnStack = 1<<17,
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PosixSAFDisable = 1<<18
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} PosixSigActionFlags;
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typedef enum PosixSigInfoCodes
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{
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PosixSIUser = 1,
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PosixSIQueue,
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PosixSITimer,
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PosixSIAsyncIO,
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PosixSIMsgQueued,
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PosixSIFaultMapError,
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PosixSIFaultAccessError,
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PosixSIChildExited,
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PosixSIChildKilled,
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PosixSIChildDumped,
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PosixSIChildTrapped,
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PosixSIChildStopped,
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PosixSIChildContinued
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} PosixSigInfoCodes;
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union sigval {
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int sival_int; /* Integer signal value */
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void* sival_ptr; /* Pointer signal value */
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void* _si_addr; /* Address of faulting address */
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int _si_status; /* Child exit status */
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uintptr_t _sival_raw; /* Raw value */
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};
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struct sigevent {
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int sigev_notify; /* Notification type */
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int sigev_signo; /* Signal number */
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union sigval sigev_value; /* Signal value */
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void (*sigev_notify_function)( union sigval );
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/* Notification function */
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long *sigev_notify_attributes; /* Notification Attributes */
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};
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typedef struct {
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int si_signo; /* Signal number */
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int si_code; /* Cause of the signal */
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int si_errno;
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int si_pid; /* Pid of sender */
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int si_uid; /* Uid of sender */
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union sigval si_value; /* Signal value */
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} PosixSignalInfo;
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#define si_addr si_value._si_addr
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#define si_status si_value._si_status
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typedef void (*PosixSigHandler)(int);
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typedef void (*PosixSigAction)(int, PosixSignalInfo *, void * );
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struct sigaction {
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int sa_flags; /* Special flags to affect behavior of signal */
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PosixSignalMask sa_mask; /* Additional set of signals to be blocked */
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/* during execution of signal-catching */
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/* function. */
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union {
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PosixSigHandler _handler; /* SIG_DFL, SIG_IGN, or pointer to a function */
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PosixSigAction _sigaction;
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} _signal_handlers;
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};
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#define sa_handler _signal_handlers._handler
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#define sa_sigaction _signal_handlers._sigaction
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typedef enum PosixFDCmds
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{
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PosixFDCDupFD = 1,
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PosixFDCDupFDCloseOnExec,
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PosixFDCGetFD,
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PosixFDCSetFD,
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PosixFDCGetFL,
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PosixFDCSetFL
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} PosixFDCmds;
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#endif /* _LIBPOSIX_DEF */
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#ifndef _LIBPOSIX_H
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#define _LIBPOSIX_H
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typedef unsigned long clock_t;
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#define __POSIX_EXIT_PREFIX "posix error "
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#define __POSIX_EXIT_SIGNAL_PREFIX "terminated by posix signal "
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#define __POSIX_SIGNAL_PREFIX "posix: "
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extern unsigned int POSIX_alarm(int *errnop, unsigned int seconds);
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extern int POSIX_access(int *errnop, const char *path, int amode);
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extern int POSIX_dup(int *errnop, int fildes);
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extern int POSIX_dup2(int *errnop, int fildes, int fildes2);
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@ -134,6 +294,8 @@ extern int POSIX_waitpid(int *errnop, int pid, int *status, int options);
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extern long POSIX_write(int *errnop, int fd, const void *buf, size_t len);
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extern int POSIX_gettimeofday(int *errnop, void *timeval, void *timezone);
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extern char* POSIX_getenv(int *errnop, const char *name);
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extern int POSIX_setenv(int *errno, const char *name, const char *value, int overwrite);
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extern int POSIX_unsetenv(int *errnop, const char *name);
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extern void *POSIX_sbrk(int *errnop, ptrdiff_t incr);
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extern void * POSIX_malloc(int *errnop, size_t size);
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extern void *POSIX_realloc(int *errnop, void *ptr, size_t size);
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@ -142,6 +304,19 @@ extern void POSIX_free(void *ptr);
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extern unsigned int POSIX_sleep(unsigned int seconds);
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extern int POSIX_pipe(int *errnop, int fildes[2]);
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extern int POSIX_umask(int *errnop, int mask);
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extern int POSIX_fcntl(int *errnop, int fd, PosixFDCmds cmd, uintptr_t arg);
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extern int POSIX_sigaddset(int *errnop, PosixSignalMask *set, int signo);
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extern int POSIX_sigdelset(int *errnop, PosixSignalMask *set, int signo);
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extern int POSIX_sigismember(int *errnop, const PosixSignalMask *set, int signo);
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extern int POSIX_sigfillset(int *errnop, PosixSignalMask *set);
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extern int POSIX_sigemptyset(int *errnop, PosixSignalMask *set);
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extern int POSIX_sigprocmask(int *errnop, PosixSigProcMaskAction how, const PosixSignalMask *set, PosixSignalMask *oset);
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extern int POSIX_sigpending(int *errnop, PosixSignalMask *set);
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extern int POSIX_sigsuspend(int *errnop, const PosixSignalMask *mask);
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extern int POSIX_sigaction(int *errnop, int signo, const struct sigaction *act, struct sigaction *old);
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extern int POSIX_sigtimedwait(int *errnop, const PosixSignalMask *set, PosixSignalInfo *info, const struct timespec *timeout);
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extern int POSIX_sigqueue(int *errnop, int pid, int signo, const union sigval value);
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extern int POSIX_getuid(int *errnop);
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extern int POSIX_geteuid(int *errnop);
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@ -159,72 +334,26 @@ extern int POSIX_setpgid(int *errnop, int pid, int pgid);
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extern int POSIX_getsid(int *errnop, int pid);
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extern int POSIX_setsid(int *errnop);
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extern int POSIX_tcgetpgrp(int *errnop, int fd);
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extern int POSIX_tcsetpgrp(int *errnop, int fd, int pgrp);
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extern int libposix_getdents(int *errnop, int fd, char *buf, int buf_bytes);
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extern PosixError libposix_translate_kernel_errors(const char *msg);
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/* Library initialization
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*/
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#define _ERRNO_H // skip the Posix part, we just need the enum
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#include <apw/errno.h>
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typedef enum PosixSignals
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{
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PosixSIGABRT = 1,
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PosixSIGALRM,
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PosixSIGBUS,
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PosixSIGCHLD,
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PosixSIGCONT,
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PosixSIGFPE,
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PosixSIGHUP,
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PosixSIGILL,
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PosixSIGINT,
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PosixSIGKILL,
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PosixSIGPIPE,
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PosixSIGQUIT,
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PosixSIGSEGV,
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PosixSIGSTOP,
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PosixSIGTERM,
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PosixSIGTSTP,
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PosixSIGTTIN,
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PosixSIGTTOU,
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PosixSIGUSR1,
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PosixSIGUSR2,
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PosixSIGPOLL,
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PosixSIGPROF,
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PosixSIGSYS,
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PosixSIGTRAP,
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PosixSIGURG,
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PosixSIGVTALRM,
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PosixSIGXCPU,
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PosixSIGXFSZ,
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/* Optional Signals */
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PosixSIGIOT,
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PosixSIGEMT,
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PosixSIGSTKFLT,
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PosixSIGIO,
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PosixSIGCLD,
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PosixSIGPWR,
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PosixSIGINFO,
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PosixSIGLOST,
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PosixSIGWINCH,
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PosixSIGUNUSED,
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PosixNumberOfSignals
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} PosixSignals;
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/* Initialize libposix. Should call
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*
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* libposix_define_errno to set the value of each PosixError
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* libposix_define_signal to set the value of each PosixSignal
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* libposix_define_at_fdcwd to set the value of AT_FDCWD (for fchmodat)
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* libposix_translate_error to translate error strings to PosixError
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* libposix_set_signal_trampoline to dispatch signal received as notes
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* libposix_set_stat_reader
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* libposix_set_tms_reader
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* libposix_set_timeval_reader
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* libposix_set_timezone_reader
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*/
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typedef void (*PosixInit)(void);
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typedef void (*PosixInit)(int argc, char *argv[]);
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extern void libposix_init(int argc, char *argv[], PosixInit init) __attribute__((noreturn));
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/* Translate an error string to a PosixError, in the context of the
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@ -327,23 +456,11 @@ typedef char* (*PosixExitStatusTranslator)(int status);
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extern int libposix_translate_exit_status(PosixExitStatusTranslator translator);
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/* Dispatch the signal to the registered handlers.
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/* Execute process disposition (executed when main returns)
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*/
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typedef enum PosixSignalAction
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{
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SignalCatched = 1,
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SignalIgnored,
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SignalError,
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SignalDefault
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} PosixSignalAction;
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typedef PosixSignalAction (*PosixSignalTrampoline)(int signal);
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extern int libposix_set_signal_trampoline(PosixSignalTrampoline trampoline);
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extern int libposix_define_signal(PosixSignals signal, int code);
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extern int libposix_define_realtime_signals(int sigrtmin, int sigrtmax);
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typedef void (*PosixProcessDisposer)(int status);
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extern int libposix_on_process_disposition(PosixProcessDisposer dispose);
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/* Enable SIGCHLD emulation
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*/
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