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#include <unistd.h> #include <errno.h> #include <fcntl.h> #include "syscall.h" void __procfdname(char *, unsigned); int fchown(int fd, uid_t uid, gid_t gid) { int ret = __syscall(SYS_fchown, fd, uid, gid); if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0) return __syscall_ret(ret); char buf[15+3*sizeof(int)]; __procfdname(buf, fd); #ifdef SYS_chown return syscall(SYS_chown, buf, uid, gid); #else return syscall(SYS_fchownat, AT_FDCWD, buf, uid, gid, 0); #endif } |