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fixing pipes

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This commit is contained in:
Axel Kittenberger 2011-01-20 18:55:46 +00:00
parent 9104e5d87e
commit 1733f8a0b1
1 changed files with 20 additions and 14 deletions
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34
lsyncd.c
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@ -411,7 +411,7 @@ pipe_writey(lua_State *L, struct observance *observance)
logstring("Normal", "broken pipe.");
nonobserve_fd(fd);
} else if (pm->pos >= pm->tlen) {
logstring("Debug", "finished pipe.");
logstring("Exec", "finished pipe.");
nonobserve_fd(fd);
}
}
@ -555,7 +555,7 @@ observe_fd(int fd,
if (observance_action) {
// TODO
logstring("Error",
"internal, New observances in ready/writey handlers not yet supported");
"internal, New observances in ready/writey handlers not yet supported");
exit(-1); // ERRNO
}
@ -616,6 +616,9 @@ nonobserve_fd(int fd)
exit(-1); //ERRNO
}
/* tidy up the observance */
observances[pos].tidy(observances + pos);
/* and moves the list down */
memmove(observances + pos, observances + pos + 1,
(observances_len - pos) * (sizeof(struct observance)));
@ -860,16 +863,19 @@ l_exec(lua_State *L)
exit(-1); // ERRNO
}
pipe_text = lua_tolstring(L, 3, &pipe_len);
/* creates the pipe */
if (pipe(pipefd) == -1) {
logstring("Error", "cannot create a pipe!");
exit(-1); // ERRNO
if (strlen(pipe_text) > 0) {
/* creates the pipe */
if (pipe(pipefd) == -1) {
logstring("Error", "cannot create a pipe!");
exit(-1); // ERRNO
}
/* always close the write end for child processes */
close_exec_fd(pipefd[1]);
/* set the write end on non-blocking */
non_block_fd(pipefd[1]);
} else {
pipe_text = NULL;
}
/* always close the write end for child processes */
close_exec_fd(pipefd[1]);
/* set the write end on non-blocking */
non_block_fd(pipefd[1]);
argc -= 2;
li += 2;
}
@ -891,6 +897,7 @@ l_exec(lua_State *L)
if (pipe_text) {
dup2(pipefd[0], STDIN_FILENO);
}
close_exec_fd(pipefd[0]);
/* if lsyncd runs as a daemon and has a logfile it will redirect
stdout/stderr of child processes to the logfile. */
if (is_daemon && settings.log_file) {
@ -919,9 +926,8 @@ l_exec(lua_State *L)
len = write(pipefd[1], pipe_text, pipe_len);
if (len < 0) {
logstring("Normal", "immediatly broken pipe.");
close(pipefd[0]);
}
if (len == pipe_len) {
close(pipefd[1]);
} else if (len == pipe_len) {
/* usual and best case, the pipe accepted all input -> close */
close(pipefd[1]);
logstring("Exec", "one-sweeped pipe");