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Use socket() and bind() to create Unix domain socket.

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Add better error checking to mkfifo() and symlink().
This commit is contained in:
Jakub Klama 2016-02-01 00:16:05 +01:00
parent 79231de3c1
commit 3b98045f24
1 changed files with 42 additions and 3 deletions
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45
backend/fs.c
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@ -40,10 +40,13 @@
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <dirent.h>
#include <pwd.h>
#include <grp.h>
#include <libgen.h>
#include <sys/socket.h>
#include "../lib9p.h"
#include "../lib9p_impl.h"
#include "../log.h"
@ -122,6 +125,12 @@ dostat(struct l9p_stat *s, char *name, struct stat *buf, bool dotu)
if (S_ISCHR(buf->st_mode) || S_ISBLK(buf->st_mode))
s->mode |= L9P_DMDEVICE;
if (S_ISSOCK(buf->st_mode))
s->mode |= L9P_DMSOCKET;
if (S_ISFIFO(buf->st_mode))
s->mode |= L9P_DMNAMEDPIPE;
s->atime = (uint32_t)buf->st_atime;
s->mtime = (uint32_t)buf->st_mtime;
s->length = (uint64_t)buf->st_size;
@ -315,9 +324,39 @@ fs_create(void *softc, struct l9p_request *req)
if (req->lr_req.tcreate.perm & L9P_DMDIR)
mkdir(newname, mode);
else if (req->lr_req.tcreate.perm & L9P_DMSYMLINK)
symlink(req->lr_req.tcreate.extension, newname);
else if (req->lr_req.tcreate.perm & L9P_DMDEVICE) {
else if (req->lr_req.tcreate.perm & L9P_DMSYMLINK) {
if (symlink(req->lr_req.tcreate.extension, newname) != 0) {
l9p_respond(req, errno);
return;
}
} else if (req->lr_req.tcreate.perm & L9P_DMNAMEDPIPE) {
if (mkfifo(newname, mode) != 0) {
l9p_respond(req, errno);
return;
}
} else if (req->lr_req.tcreate.perm & L9P_DMSOCKET) {
struct sockaddr_un sun;
int s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s < 0) {
l9p_respond(req, errno);
return;
}
sun.sun_family = AF_UNIX;
sun.sun_len = sizeof(struct sockaddr_un);
strncpy(sun.sun_path, newname, sizeof(sun.sun_path));
if (bind(s, (struct sockaddr *)&sun, sun.sun_len) < 0) {
l9p_respond(req, errno);
return;
}
if (close(s) != 0) {
l9p_respond(req, errno);
return;
}
} else if (req->lr_req.tcreate.perm & L9P_DMDEVICE) {
char type;
int major, minor;