diff options
Diffstat (limited to 'Modules/posixmodule.c')
| -rw-r--r-- | Modules/posixmodule.c | 260 |
1 files changed, 233 insertions, 27 deletions
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c index 4e84407..2e800de 100644 --- a/Modules/posixmodule.c +++ b/Modules/posixmodule.c @@ -135,10 +135,7 @@ static object *PosixError; /* Exception posix.error */ /* Set a POSIX-specific error from errno, and return NULL */ -static object * -posix_error() -{ - return err_errno(PosixError); +static object * posix_error() { return err_errno(PosixError); } @@ -207,7 +204,6 @@ posix_do_stat(self, args, statfunc) { struct stat st; char *path; - object *v; int res; if (!getstrarg(args, &path)) return NULL; @@ -216,7 +212,7 @@ posix_do_stat(self, args, statfunc) END_SAVE if (res != 0) return posix_error(); - v = mkvalue("(llllllllll)", + return mkvalue("(llllllllll)", (long)st.st_mode, (long)st.st_ino, (long)st.st_dev, @@ -664,7 +660,7 @@ posix_setpgrp(self, args) #else if (setpgrp(0, 0) < 0) #endif - return err_errno(PosixError); + return posix_error(); INCREF(None); return None; } @@ -823,10 +819,8 @@ posix_times(self, args) return NULL; errno = 0; c = times(&t); - if (c == (clock_t) -1) { - err_errno(PosixError); - return NULL; - } + if (c == (clock_t) -1) + return posix_error(); return mkvalue("dddd", (double)t.tms_utime / HZ, (double)t.tms_stime / HZ, @@ -845,10 +839,8 @@ posix_setsid(self, args) { if (!getnoarg(args)) return NULL; - if (setsid() < 0) { - err_errno(PosixError); - return NULL; - } + if (setsid() < 0) + return posix_error(); INCREF(None); return None; } @@ -861,10 +853,8 @@ posix_setpgid(self, args) int pid, pgrp; if (!getargs(args, "(ii)", &pid, &pgrp)) return NULL; - if (setpgid(pid, pgrp) < 0) { - err_errno(PosixError); - return NULL; - } + if (setpgid(pid, pgrp) < 0) + return posix_error(); INCREF(None); return None; } @@ -878,10 +868,8 @@ posix_tcgetpgrp(self, args) if (!getargs(args, "i", &fd)) return NULL; pgid = tcgetpgrp(fd); - if (pgid < 0) { - err_errno(PosixError); - return NULL; - } + if (pgid < 0) + return posix_error(); return newintobject((long)pgid); } @@ -893,16 +881,221 @@ posix_tcsetpgrp(self, args) int fd, pgid; if (!getargs(args, "(ii)", &fd, &pgid)) return NULL; - if (tcsetpgrp(fd, pgid) < 0) { - err_errno(PosixError); - return NULL; - } + if (tcsetpgrp(fd, pgid) < 0) + return posix_error(); INCREF(None); return None; } #endif /* DO_PG */ +/* Functions acting on file descriptors */ + +object * +posix_open(self, args) + object *self; + object *args; +{ + char *file; + int flag; + int mode = 0777; + int fd; + if (!getargs(args, "(si)", &file, &flag)) { + err_clear(); + if (!getargs(args, "(sii)", &file, &flag, &mode)) + return NULL; + } + BGN_SAVE + fd = open(file, flag, mode); + END_SAVE + if (fd < 0) + return posix_error(); + return newintobject((long)fd); +} + +object * +posix_close(self, args) + object *self; + object *args; +{ + int fd, res; + if (!getargs(args, "i", &fd)) + return NULL; + BGN_SAVE + res = close(fd); + END_SAVE + if (res < 0) + return posix_error(); + INCREF(None); + return None; +} + +object * +posix_dup(self, args) + object *self; + object *args; +{ + int fd; + if (!getargs(args, "i", &fd)) + return NULL; + BGN_SAVE + fd = dup(fd); + END_SAVE + if (fd < 0) + return posix_error(); + return newintobject((long)fd); +} + +object * +posix_dup2(self, args) + object *self; + object *args; +{ + int fd, fd2, res; + if (!getargs(args, "(ii)", &fd, &fd2)) + return NULL; + BGN_SAVE + res = dup2(fd, fd2); + END_SAVE + if (res < 0) + return posix_error(); + INCREF(None); + return None; +} + +object * +posix_lseek(self, args) + object *self; + object *args; +{ + int fd, how; + long pos, res; + if (!getargs(args, "(ili)", &fd, &pos, &how)) + return NULL; +#ifdef SEEK_SET + /* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */ + switch (how) { + case 0: how = SEEK_SET; break; + case 1: how = SEEK_CUR; break; + case 2: how = SEEK_END; break; + } +#endif + BGN_SAVE + res = lseek(fd, pos, how); + END_SAVE + if (res < 0) + return posix_error(); + return newintobject(res); +} + +object * +posix_read(self, args) + object *self; + object *args; +{ + int fd, size; + object *buffer; + if (!getargs(args, "(ii)", &fd, &size)) + return NULL; + buffer = newsizedstringobject((char *)NULL, size); + if (buffer == NULL) + return NULL; + BGN_SAVE + size = read(fd, getstringvalue(buffer), size); + END_SAVE + if (size < 0) { + DECREF(buffer); + return posix_error(); + } + resizestring(&buffer, size); + return buffer; +} + +object * +posix_write(self, args) + object *self; + object *args; +{ + int fd, size; + char *buffer; + if (!getargs(args, "(is#)", &fd, &buffer, &size)) + return NULL; + BGN_SAVE + size = write(fd, buffer, size); + END_SAVE + if (size < 0) + return posix_error(); + return newintobject((long)size); +} + +object * +posix_fstat(self, args) + object *self; + object *args; +{ + int fd; + struct stat st; + int res; + if (!getargs(args, "i", &fd)) + return NULL; + BGN_SAVE + res = fstat(fd, &st); + END_SAVE + if (res != 0) + return posix_error(); + return mkvalue("(llllllllll)", + (long)st.st_mode, + (long)st.st_ino, + (long)st.st_dev, + (long)st.st_nlink, + (long)st.st_uid, + (long)st.st_gid, + (long)st.st_size, + (long)st.st_atime, + (long)st.st_mtime, + (long)st.st_ctime); +} + +static object * +posix_fdopen(self, args) + object *self; + object *args; +{ + extern int fclose PROTO((FILE *)); + int fd; + char *mode; + FILE *fp; + if (!getargs(args, "(is)", &fd, &mode)) + return NULL; + BGN_SAVE + fp = fdopen(fd, mode); + END_SAVE + if (fp == NULL) + return posix_error(); + /* From now on, ignore SIGPIPE and let the error checking + do the work. */ + (void) signal(SIGPIPE, SIG_IGN); + return newopenfileobject(fp, "(fdopen)", mode, fclose); +} + +#ifndef MSDOS +object * +posix_pipe(self, args) + object *self; + object *args; +{ + int fds[2]; + int res; + if (!getargs(args, "")) + return NULL; + BGN_SAVE + res = pipe(fds); + END_SAVE + if (res != 0) + return posix_error(); + return mkvalue("(ii)", fds[0], fds[1]); +} +#endif /* MSDOS */ static struct methodlist posix_methods[] = { {"chdir", posix_chdir}, @@ -960,6 +1153,19 @@ static struct methodlist posix_methods[] = { {"tcsetpgrp", posix_tcsetpgrp}, #endif + {"open", posix_open}, + {"close", posix_close}, + {"dup", posix_dup}, + {"dup2", posix_dup2}, + {"lseek", posix_lseek}, + {"read", posix_read}, + {"write", posix_write}, + {"fstat", posix_fstat}, + {"fdopen", posix_fdopen}, +#ifndef MSDOS + {"pipe", posix_pipe}, +#endif + {NULL, NULL} /* Sentinel */ }; 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