wait.h

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#ifndef __VSF_LINUX_SYS_WAIT_H__
#define __VSF_LINUX_SYS_WAIT_H__
 
#include "shell/sys/linux/vsf_linux_cfg.h"
 
#if VSF_LINUX_CFG_RELATIVE_PATH == ENABLED
#   include "../sys/types.h"
#   include "../signal.h"
#else
#   include <sys/types.h>
#   include <signal.h>
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if VSF_LINUX_CFG_WRAPPER == ENABLED
#define waitpid                 VSF_LINUX_WRAPPER(waitpid)
#endif
 
// syscalls
 
#define __NR_waitpid            waitpid
 
// options of waitpid
#define WEXITED                 1
#define WSTOPPED                2
#define WCONTINUED              3
#define WNOHANG                 4
#define WNOWAIT                 5
#define WUNTRACED               6
 
// internal usage
#define PID_STATUS_RUNNING      (1 << 0)
#define PID_STATUS_DAEMON       (1 << 1)
 
#define WIFEXITED(__STATUS)     !((__STATUS) & 0xFF)
#define WEXITSTATUS(__STATUS)   ((__STATUS) >> 8)
// TODO: implement WIFSIGNALED
#define WIFSIGNALED(__STATUS)   0
#define WTERMSIG(__STATUS)      ((__STATUS) & 0x7F)
#define WIFSTOPPED(__STATUS)    0
#define WSTOPSIG(__STATUS)      0
 
#if VSF_LINUX_APPLET_USE_SYS_WAIT == ENABLED
typedef struct vsf_linux_sys_wait_vplt_t {
    vsf_vplt_info_t info;
 
    VSF_APPLET_VPLT_ENTRY_FUNC_DEF(wait);
    VSF_APPLET_VPLT_ENTRY_FUNC_DEF(waitpid);
    VSF_APPLET_VPLT_ENTRY_FUNC_DEF(waitid);
} vsf_linux_sys_wait_vplt_t;
#   ifndef __VSF_APPLET__
extern __VSF_VPLT_DECORATOR__ vsf_linux_sys_wait_vplt_t vsf_linux_sys_wait_vplt;
#   endif
#endif
 
#if     defined(__VSF_APPLET__) && (defined(__VSF_APPLET_LIB__) || defined(__VSF_APPLET_LINUX_SYS_WAIT_LIB__))\
    &&  VSF_APPLET_CFG_ABI_PATCH != ENABLED && VSF_LINUX_APPLET_USE_SYS_WAIT == ENABLED
 
#ifndef VSF_LINUX_APPLET_SYS_WAIT_VPLT
#   if VSF_LINUX_USE_APPLET == ENABLED
#       define VSF_LINUX_APPLET_SYS_WAIT_VPLT                                   \
            ((vsf_linux_sys_wait_vplt_t *)(VSF_LINUX_APPLET_VPLT->sys_wait_vplt))
#   else
#       define VSF_LINUX_APPLET_SYS_WAIT_VPLT                                   \
            ((vsf_linux_sys_wait_vplt_t *)vsf_vplt((void *)0))
#   endif
#endif
 
#define VSF_LINUX_APPLET_SYS_WAIT_ENTRY(__NAME)                                 \
            VSF_APPLET_VPLT_ENTRY_FUNC_ENTRY(VSF_LINUX_APPLET_SYS_WAIT_VPLT, __NAME)
#define VSF_LINUX_APPLET_SYS_WAIT_IMP(...)                                      \
            VSF_APPLET_VPLT_ENTRY_FUNC_IMP(VSF_LINUX_APPLET_SYS_WAIT_VPLT, __VA_ARGS__)
 
VSF_LINUX_APPLET_SYS_WAIT_IMP(wait, pid_t, int *status) {
    VSF_APPLET_VPLT_ENTRY_FUNC_TRACE();
    return VSF_LINUX_APPLET_SYS_WAIT_ENTRY(wait)(status);
}
VSF_LINUX_APPLET_SYS_WAIT_IMP(waitpid, pid_t, pid_t pid, int *status, int options) {
    VSF_APPLET_VPLT_ENTRY_FUNC_TRACE();
    return VSF_LINUX_APPLET_SYS_WAIT_ENTRY(waitpid)(pid, status, options);
}
VSF_LINUX_APPLET_SYS_WAIT_IMP(waitid, int, idtype_t idtype, id_t id, siginfo_t *infop, int options) {
    VSF_APPLET_VPLT_ENTRY_FUNC_TRACE();
    return VSF_LINUX_APPLET_SYS_WAIT_ENTRY(waitid)(idtype, id, infop, options);
}
 
#else       // __VSF_APPLET__ && VSF_LINUX_APPLET_USE_SYS_WAIT
 
pid_t wait(int *status);
pid_t waitpid(pid_t pid, int *status, int options);
int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options);
 
#endif      // __VSF_APPLET__ && VSF_LINUX_APPLET_USE_SYS_WAIT
 
#ifdef __cplusplus
}
#endif
 
#endif