mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
1eb6484c9c
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.
265 lines
9.4 KiB
C
265 lines
9.4 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_
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#define COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_
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#define _POSIX_VERSION 200809L
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#define _POSIX2_VERSION _POSIX_VERSION
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#define _XOPEN_VERSION 700
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#define _POSIX_MAPPED_FILES _POSIX_VERSION
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#define _POSIX_FSYNC _POSIX_VERSION
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#define _POSIX_IPV6 _POSIX_VERSION
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#define _POSIX_THREADS _POSIX_VERSION
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#define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
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#define _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_VERSION
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#define _POSIX_THREAD_ATTR_STACKADDR _POSIX_VERSION
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#define _POSIX_THREAD_ATTR_STACKSIZE _POSIX_VERSION
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#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION
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#define _POSIX_THREAD_CPUTIME _POSIX_VERSION
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#define _POSIX_TIMEOUTS _POSIX_VERSION
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#define _POSIX_MONOTONIC_CLOCK _POSIX_VERSION
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#define _POSIX_CPUTIME _POSIX_VERSION
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#define _POSIX_BARRIERS _POSIX_VERSION
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#define _POSIX_SPIN_LOCKS _POSIX_VERSION
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#define _POSIX_READER_WRITER_LOCKS _POSIX_VERSION
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#define _POSIX_SEMAPHORES _POSIX_VERSION
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#define _POSIX_SHARED_MEMORY_OBJECTS _POSIX_VERSION
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#define _POSIX_MEMLOCK_RANGE _POSIX_VERSION
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#define _POSIX_SPAWN _POSIX_VERSION
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#define NSIG 64
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#define SEEK_SET 0 /* relative to beginning */
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#define SEEK_CUR 1 /* relative to current position */
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#define SEEK_END 2 /* relative to end */
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#define __WALL 0x40000000 /* Wait on all children, regardless of type */
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#define __WCLONE 0x80000000 /* Wait only on non-SIGCHLD children */
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#define SIG_ERR ((void (*)(int))(-1))
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#define SIG_DFL ((void (*)(int))0)
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#define SIG_IGN ((void (*)(int))1)
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#define CLOCKS_PER_SEC 1000000L
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#define MAP_FAILED ((void *)-1)
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#define WTERMSIG(x) (127 & (x))
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#define WCOREDUMP(x) (128 & (x))
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#define WIFEXITED(x) (!WTERMSIG(x))
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#define WEXITSTATUS(x) ((x) >> 8)
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#define WSTOPSIG(x) ((0xff00 & (x)) >> 8)
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#define WIFSTOPPED(x) __wifstopped(x)
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#define WIFSIGNALED(x) __wifsignaled(x)
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#define WIFCONTINUED(x) __wifcontinued(x)
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#define W_STOPCODE(x) ((x) << 8 | 0177)
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#ifdef _COSMO_SOURCE
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#define clone __clone
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#define commandv __commandv
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#define fileexists __fileexists
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#define ischardev __ischardev
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#define isdirectory __isdirectory
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#define isexecutable __isexecutable
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#define isregularfile __isregularfile
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#define issymlink __issymlink
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#define makedirs __makedirs
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#define tmpfd __tmpfd
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#endif
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § system calls ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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typedef int sig_atomic_t;
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bool32 isatty(int);
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char *getcwd(char *, size_t);
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char *realpath(const char *, char *) __wur;
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char *ttyname(int);
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int access(const char *, int) dontthrow;
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int chdir(const char *);
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int chmod(const char *, unsigned);
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int chown(const char *, unsigned, unsigned);
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int chroot(const char *);
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int close(int);
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int close_range(unsigned, unsigned, unsigned);
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int closefrom(int);
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int creat(const char *, unsigned);
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int dup(int);
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int dup2(int, int);
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int dup3(int, int, int);
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int execl(const char *, const char *, ...) nullterminated();
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int execle(const char *, const char *, ...) nullterminated((1));
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int execlp(const char *, const char *, ...) nullterminated();
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int execv(const char *, char *const[]);
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int execve(const char *, char *const[], char *const[]);
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int execvp(const char *, char *const[]);
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int faccessat(int, const char *, int, int);
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int fchdir(int);
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int fchmod(int, unsigned) dontthrow;
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int fchmodat(int, const char *, unsigned, int);
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int fchown(int, unsigned, unsigned);
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int fchownat(int, const char *, unsigned, unsigned, int);
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int fcntl(int, int, ...);
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int fdatasync(int);
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int fexecve(int, char *const[], char *const[]);
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int flock(int, int);
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int fork(void);
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int fsync(int);
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int ftruncate(int, int64_t);
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int getdomainname(char *, size_t);
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int getgroups(int, unsigned[]);
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int gethostname(char *, size_t);
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int getloadavg(double *, int);
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int getpgid(int) libcesque;
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int getpgrp(void) nosideeffect;
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int getpid(void) nosideeffect libcesque;
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int getppid(void);
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int getpriority(int, unsigned);
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int getsid(int) nosideeffect libcesque;
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int ioctl(int, unsigned long, ...);
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int issetugid(void);
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int kill(int, int);
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int killpg(int, int);
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int lchmod(const char *, unsigned);
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int lchown(const char *, unsigned, unsigned);
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int link(const char *, const char *) dontthrow;
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int linkat(int, const char *, int, const char *, int);
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int mincore(void *, size_t, unsigned char *);
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int mkdir(const char *, unsigned);
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int mkdirat(int, const char *, unsigned);
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int mknod(const char *, unsigned, uint64_t);
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int nice(int);
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int open(const char *, int, ...);
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int openat(int, const char *, int, ...);
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int pause(void);
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int pipe(int[hasatleast 2]);
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int pipe2(int[hasatleast 2], int);
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int posix_fadvise(int, int64_t, int64_t, int);
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int posix_madvise(void *, uint64_t, int);
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int raise(int);
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int reboot(int);
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int remove(const char *);
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int rename(const char *, const char *);
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int renameat(int, const char *, int, const char *);
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int rmdir(const char *);
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int sched_yield(void);
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int setegid(unsigned);
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int seteuid(unsigned);
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int setfsgid(unsigned);
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int setfsuid(unsigned);
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int setgid(unsigned);
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int setgroups(size_t, const unsigned[]);
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int setpgid(int, int);
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int setpgrp(void);
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int setpriority(int, unsigned, int);
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int setregid(unsigned, unsigned);
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int setreuid(unsigned, unsigned);
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int setsid(void);
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int setuid(unsigned);
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int shm_open(const char *, int, unsigned);
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int shm_unlink(const char *);
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int sigignore(int);
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int siginterrupt(int, int);
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int symlink(const char *, const char *);
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int symlinkat(const char *, int, const char *);
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int truncate(const char *, int64_t);
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int ttyname_r(int, char *, size_t);
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int unlink(const char *);
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int unlinkat(int, const char *, int);
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int usleep(unsigned);
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int vfork(void) returnstwice;
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int wait(int *);
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int waitpid(int, int *, int);
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int64_t clock(void);
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int64_t time(int64_t *);
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ssize_t copy_file_range(int, long *, int, long *, size_t, unsigned);
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ssize_t lseek(int, int64_t, int);
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ssize_t pread(int, void *, size_t, int64_t);
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ssize_t pwrite(int, const void *, size_t, int64_t);
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ssize_t read(int, void *, size_t);
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ssize_t readlink(const char *, char *, size_t);
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ssize_t readlinkat(int, const char *, char *, size_t);
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ssize_t write(int, const void *, size_t);
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unsigned alarm(unsigned);
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unsigned getegid(void) nosideeffect;
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unsigned geteuid(void) nosideeffect;
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unsigned getgid(void) nosideeffect;
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unsigned getuid(void) libcesque;
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unsigned sleep(unsigned);
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unsigned ualarm(unsigned, unsigned);
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unsigned umask(unsigned);
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void sync(void);
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#if defined(_COSMO_SOURCE) || defined(_GNU_SOURCE)
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int syncfs(int);
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int prctl(int, ...);
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int gettid(void) libcesque;
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int setresgid(unsigned, unsigned, unsigned);
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int setresuid(unsigned, unsigned, unsigned);
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int getresgid(unsigned *, unsigned *, unsigned *);
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int getresuid(unsigned *, unsigned *, unsigned *);
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char *get_current_dir_name(void) __wur;
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int sync_file_range(int, int64_t, int64_t, unsigned);
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ssize_t splice(int, int64_t *, int, int64_t *, size_t, unsigned);
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int memfd_create(const char *, unsigned int);
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int execvpe(const char *, char *const[], char *const[]);
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int euidaccess(const char *, int);
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int eaccess(const char *, int);
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int madvise(void *, uint64_t, int);
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#endif
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#ifdef _COSMO_SOURCE
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bool32 fdexists(int);
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bool32 fileexists(const char *);
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bool32 ischardev(int);
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bool32 isdirectory(const char *);
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bool32 isexecutable(const char *);
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bool32 isregularfile(const char *);
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bool32 issymlink(const char *);
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char *commandv(const char *, char *, size_t);
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int __getcwd(char *, size_t);
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int clone(void *, void *, size_t, int, void *, void *, void *, void *);
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int fadvise(int, uint64_t, uint64_t, int);
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int makedirs(const char *, unsigned);
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int pivot_root(const char *, const char *);
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int pledge(const char *, const char *);
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int seccomp(unsigned, unsigned, void *);
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int sys_iopl(int);
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int sys_ioprio_get(int, int);
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int sys_ioprio_set(int, int, int);
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int sys_mlock(const void *, size_t);
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int sys_mlock2(const void *, size_t, int);
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int sys_mlockall(int);
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int sys_munlock(const void *, size_t);
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int sys_munlockall(void);
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int sys_personality(uint64_t);
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int sys_ptrace(int, ...);
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int sys_sysctl(const int *, unsigned, void *, size_t *, void *, size_t);
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int tmpfd(void);
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int touch(const char *, unsigned);
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int unveil(const char *, const char *);
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long ptrace(int, ...);
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ssize_t copyfd(int, int, size_t);
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ssize_t readansi(int, char *, size_t);
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ssize_t tinyprint(int, const char *, ...) nullterminated();
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void shm_path_np(const char *, char[hasatleast 78]);
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#endif /* _COSMO_SOURCE */
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int __wifstopped(int) pureconst;
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int __wifcontinued(int) pureconst;
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int __wifsignaled(int) pureconst;
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#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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#define lseek64 lseek
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#define pread64 pread
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#define pwrite64 pwrite
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#define truncate64 truncate
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#define ftruncate64 ftruncate
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#define lockf64 lockf
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#endif
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_ */
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