cosmopolitan/libc/calls/syscall-nt.internal.h
Justine Tunney 1eb6484c9c
Rewrite getcwd()
This change addresses a bug that was reported in #923 where bash on
Windows behaved strangely. It turned out that our weak linking of
malloc() caused bash's configure script to favor its own getcwd()
function, which is implemented in the most astonishing way, using
opendir() and readdir() to recursively construct the current path.

This change moves getcwd() into LIBC_STDIO so it can strongly link
malloc(). A new __getcwd() function is now introduced, so all the
low-level runtime services can still use the actual system call. It
provides the Linux Kernel API convention across platforms, and is
overall a higher-quality implementation than what we had before.

In the future, we should probably take a closer look into why bash's
getcwd() polyfill wasn't working as intended on Windows, since there
might be a potential opportunity there to improve our readdir() too.
2023-11-02 13:16:42 -07:00

45 lines
1.7 KiB
C

#ifndef COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_
#define COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
bool32 sys_isatty(int);
int sys_chdir_nt(const char *);
int sys_close_epoll_nt(int);
int sys_dup_nt(int, int, int, int);
int sys_execve_nt(const char *, char *const[], char *const[]);
int sys_faccessat_nt(int, const char *, int, uint32_t);
int sys_fadvise_nt(int, uint64_t, uint64_t, int);
int sys_fchdir_nt(int);
int sys_fchmod_nt(int, uint32_t);
int sys_fchmodat_nt(int, const char *, uint32_t, int);
int sys_fcntl_nt(int, int, uintptr_t);
int sys_fdatasync_nt(int, bool);
int sys_flock_nt(int, int);
int sys_fork_nt(uint32_t);
int sys_fsync_fake(int);
int sys_ftruncate_nt(int64_t, uint64_t);
int sys_getloadavg_nt(double *, int);
int sys_getppid_nt(void);
int sys_getpriority_nt(int, unsigned);
int sys_kill_nt(int, int);
int sys_linkat_nt(int, const char *, int, const char *);
int sys_madvise_nt(void *, size_t, int);
int sys_mkdirat_nt(int, const char *, uint32_t);
int sys_msync_nt(char *, size_t, int);
int sys_open_nt(int, const char *, uint32_t, int32_t) __wur;
int sys_pipe_nt(int[hasatleast 2], unsigned);
int sys_renameat_nt(int, const char *, int, const char *);
int sys_sched_yield_nt(void);
int sys_setpriority_nt(int, unsigned, int);
int sys_symlinkat_nt(const char *, int, const char *);
int sys_sync_nt(void);
int sys_truncate_nt(const char *, uint64_t);
int sys_unlinkat_nt(int, const char *, int);
int64_t sys_lseek_nt(int, int64_t, int);
ssize_t sys_read_nt_impl(int, void *, size_t, int64_t);
ssize_t sys_readlinkat_nt(int, const char *, char *, size_t);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_ */