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getpwent family impl
+131
+92
src/libSystem/libc/getpwent.cpp
+92
src/libSystem/libc/getpwent.cpp
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#include "config.h"
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#include "getpwent.h"
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#include "darwin_errno_codes.h"
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#include <pwd.h>
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#include <cstring>
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#include <errno.h>
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#include <cstdlib>
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#include <iostream>
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#include "errno.h"
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static void passwdLinuxToDarwin(const struct passwd* in, __darwin_passwd* out)
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{
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memset(out, 0, sizeof(*out));
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out->pw_name = in->pw_name;
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out->pw_passwd = in->pw_passwd;
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out->pw_uid = in->pw_uid;
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out->pw_gid = in->pw_gid;
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out->pw_gecos = in->pw_gecos;
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out->pw_dir = in->pw_dir;
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out->pw_shell = in->pw_shell;
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}
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static __darwin_passwd* passwdLinuxToDarwin(const struct passwd* in)
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{
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static __thread __darwin_passwd pwd;
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passwdLinuxToDarwin(in, &pwd);
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return &pwd;
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}
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__darwin_passwd* __darwin_getpwent()
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{
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return passwdLinuxToDarwin(getpwent());
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}
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__darwin_passwd* __darwin_getpwnam(const char* login)
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{
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return passwdLinuxToDarwin(getpwnam(login));
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}
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template<typename Func, typename Param> int GenericGet_R(Func f, Param p, struct __darwin_passwd *pwd,
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char *buffer, size_t bufsize, struct __darwin_passwd **result)
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{
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static_assert(sizeof(struct __darwin_passwd) >= sizeof(struct passwd), "struct passwd is too small on this platform!");
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int rv = f(p, reinterpret_cast<struct passwd*>(pwd), buffer, bufsize, reinterpret_cast<struct passwd**>(result));
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if (rv != 0)
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{
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return errnoLinuxToDarwin(rv);
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}
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else
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{
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if (*result)
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{
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struct passwd l;
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memcpy(&l, *result, sizeof(l));
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passwdLinuxToDarwin(&l, *result);
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}
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return 0;
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}
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}
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int __darwin_getpwnam_r(const char *name, struct __darwin_passwd *pwd, char *buffer, size_t bufsize, struct __darwin_passwd **result)
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{
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return GenericGet_R(getpwnam_r, name, pwd, buffer, bufsize, result);
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}
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__darwin_passwd* __darwin_getpwuid(uid_t uid)
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{
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return passwdLinuxToDarwin(getpwuid(uid));
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}
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int __darwin_getpwuid_r(uid_t uid, struct __darwin_passwd *pwd, char *buffer, size_t bufsize, struct __darwin_passwd **result)
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{
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return GenericGet_R(getpwuid_r, uid, pwd, buffer, bufsize, result);
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}
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int __darwin_getpwuuid(/* ... */)
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{
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errno = DARWIN_ENOSYS;
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return -1;
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}
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int __darwin_getpwuuid_r(/* ... */)
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{
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errno = DARWIN_ENOSYS;
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return -1;
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}
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int __darwin_setpassent(int stayopen);
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+39
src/libSystem/libc/getpwent.h
+39
src/libSystem/libc/getpwent.h
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#ifndef LIBC_GETPWENT_H
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#define LIBC_GETPWENT_H
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#include <sys/types.h>
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extern "C"
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{
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struct __darwin_passwd
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{
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const char* pw_name;
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const char* pw_passwd;
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uid_t pw_uid;
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gid_t pw_gid;
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time_t pw_change;
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const char* pw_class;
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const char* pw_gecos;
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const char* pw_dir;
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const char* pw_shell;
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time_t pw_expire;
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};
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__darwin_passwd* __darwin_getpwent();
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__darwin_passwd* __darwin_getpwnam(const char* login);
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int __darwin_getpwnam_r(const char *name, struct __darwin_passwd *pwd, char *buffer, size_t bufsize, struct __darwin_passwd **result);
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__darwin_passwd* __darwin_getpwuid(uid_t uid);
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int __darwin_getpwuid_r(uid_t uid, struct __darwin_passwd *pwd, char *buffer, size_t bufsize, struct __darwin_passwd **result);
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int __darwin_getpwuuid(/* ... */);
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int __darwin_getpwuuid_r(/* ... */);
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int __darwin_setpassent(int stayopen);
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// not needed, compatible
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// void __darwin_setpwent();
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// void __darwin_endpwent();
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}
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#endif
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