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passthrough_ll: added more debugging output

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This commit is contained in:
Nikolaus Rath 2017-08-04 21:56:45 +02:00
parent 0f1fdd2205
commit c36e7d528e
1 changed files with 20 additions and 1 deletions
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21
example/passthrough_ll.c
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@ -46,6 +46,7 @@
#include <assert.h>
#include <errno.h>
#include <err.h>
#include <inttypes.h>
/* We are re-using pointers to our `struct lo_inode` and `struct
lo_dirp` elements as inodes. This means that we must be able to
@ -233,6 +234,10 @@ static void lo_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
struct fuse_entry_param e;
int err;
if (lo_debug(req))
fprintf(stderr, "lo_lookup(parent=%" PRIu64 ", name=%s)\n",
parent, name);
err = lo_do_lookup(req, parent, name, &e);
if (err)
fuse_reply_err(req, err);
@ -436,6 +441,10 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
struct fuse_entry_param e;
int err;
if (lo_debug(req))
fprintf(stderr, "lo_create(parent=%" PRIu64 ", name=%s)\n",
parent, name);
fd = openat(lo_fd(req, parent), name,
(fi->flags | O_CREAT) & ~O_NOFOLLOW, mode);
if (fd == -1)
@ -456,6 +465,10 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino,
int fd;
char buf[64];
if (lo_debug(req))
fprintf(stderr, "lo_open(ino=%" PRIu64 ", flags=%d)\n",
ino, fi->flags);
sprintf(buf, "/proc/self/fd/%i", lo_fd(req, ino));
fd = open(buf, fi->flags & ~O_NOFOLLOW);
if (fd == -1)
@ -478,7 +491,9 @@ static void lo_read(fuse_req_t req, fuse_ino_t ino, size_t size,
{
struct fuse_bufvec buf = FUSE_BUFVEC_INIT(size);
(void) ino;
if (lo_debug(req))
fprintf(stderr, "lo_read(ino=%" PRIu64 ", size=%zd, "
"off=%lu)\n", ino, size, (unsigned long) offset);
buf.buf[0].flags = FUSE_BUF_IS_FD | FUSE_BUF_FD_SEEK;
buf.buf[0].fd = fi->fh;
@ -499,6 +514,10 @@ static void lo_write_buf(fuse_req_t req, fuse_ino_t ino,
out_buf.buf[0].fd = fi->fh;
out_buf.buf[0].pos = off;
if (lo_debug(req))
fprintf(stderr, "lo_write(ino=%" PRIu64 ", size=%zd, off=%lu)\n",
ino, out_buf.buf[0].size, (unsigned long) off);
res = fuse_buf_copy(&out_buf, in_buf, 0);
if(res < 0)
fuse_reply_err(req, -res);