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Introduce callback for logging

Browse Source 
Introduce an API for custom log handler functions.  This allows libfuse
applications to send messages to syslog(3) or other logging systems.
See include/fuse_log.h for details.

Convert libfuse from fprintf(stderr, ...) to log_fuse(level, ...).  Most
messages are error messages with FUSE_LOG_ERR log level.  There are also
some debug messages which now use the FUSE_LOG_DEBUG log level.

Note that lib/mount_util.c is used by both libfuse and fusermount3.
Since fusermount3 does not link against libfuse, we cannot call
fuse_log() from lib/mount_util.c.  This file will continue to use
fprintf(stderr, ...) until someone figures out how to split it up.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2019-09-04 15:59:18 +01:00 committed by Nikolaus Rath
parent f39c71dcf9
commit 317181e8ea
18 changed files with 303 additions and 175 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog.rst
View File

@ -1,3 +1,10 @@
Unreleased Changes
==================
* Added custom log message handler function support so that libfuse
applications can direct messages to syslog(3) or other logging systems.
stderr remains the default. See `fuse_log.h` for the new API.
libfuse 3.6.2 (2019-07-09)
==========================

1
include/fuse_common.h
View File

@ -15,6 +15,7 @@
#define FUSE_COMMON_H_
#include "fuse_opt.h"
#include "fuse_log.h"
#include <stdint.h>
#include <sys/types.h>

74
include/fuse_log.h Normal file
View File

@ -0,0 +1,74 @@
/*
FUSE: Filesystem in Userspace
Copyright (C) 2019 Red Hat, Inc.
This program can be distributed under the terms of the GNU LGPLv2.
See the file COPYING.LIB.
*/
#ifndef FUSE_LOG_H_
#define FUSE_LOG_H_
/** @file
*
* This file defines the logging interface of FUSE
*/
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Log severity level
*
* These levels correspond to syslog(2) log levels since they are widely used.
*/
enum fuse_log_level {
FUSE_LOG_EMERG,
FUSE_LOG_ALERT,
FUSE_LOG_CRIT,
FUSE_LOG_ERR,
FUSE_LOG_WARNING,
FUSE_LOG_NOTICE,
FUSE_LOG_INFO,
FUSE_LOG_DEBUG
};
/**
* Log message handler function.
*
* This function must be thread-safe. It may be called from any libfuse
* function, including fuse_parse_cmdline() and other functions invoked before
* a FUSE filesystem is created.
*
* Install a custom log message handler function using fuse_set_log_func().
*
* @param level log severity level
* @param fmt sprintf-style format string including newline
* @param ap format string arguments
*/
typedef void (*fuse_log_func_t)(enum fuse_log_level level,
const char *fmt, va_list ap);
/**
* Install a custom log handler function.
*
* Log messages are emitted by libfuse functions to report errors and debug
* information. Messages are printed to stderr by default but this can be
* overridden by installing a custom log message handler function.
*
* The log message handler function is global and affects all FUSE filesystems
* created within this process.
*
* @param func a custom log message handler function or NULL to revert to
* the default
*/
void fuse_set_log_func(fuse_log_func_t func);
#ifdef __cplusplus
}
#endif
#endif /* FUSE_LOG_H_ */

2
include/meson.build
View File

@ -1,4 +1,4 @@
libfuse_headers = [ 'fuse.h', 'fuse_common.h', 'fuse_lowlevel.h',
'fuse_opt.h', 'cuse_lowlevel.h' ]
'fuse_opt.h', 'cuse_lowlevel.h', 'fuse_log.h' ]
install_headers(libfuse_headers, subdir: 'fuse3')

30
lib/cuse_lowlevel.c
View File

@ -122,14 +122,14 @@ static struct cuse_data *cuse_prep_data(const struct cuse_info *ci,
NULL);
if (dev_info_len > CUSE_INIT_INFO_MAX) {
fprintf(stderr, "cuse: dev_info (%zu) too large, limit=%u\n",
fuse_log(FUSE_LOG_ERR, "cuse: dev_info (%zu) too large, limit=%u\n",
dev_info_len, CUSE_INIT_INFO_MAX);
return NULL;
}
cd = calloc(1, sizeof(*cd) + dev_info_len);
if (!cd) {
fprintf(stderr, "cuse: failed to allocate cuse_data\n");
fuse_log(FUSE_LOG_ERR, "cuse: failed to allocate cuse_data\n");
return NULL;
}
@ -203,8 +203,8 @@ void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
(void) nodeid;
if (se->debug) {
fprintf(stderr, "CUSE_INIT: %u.%u\n", arg->major, arg->minor);
fprintf(stderr, "flags=0x%08x\n", arg->flags);
fuse_log(FUSE_LOG_DEBUG, "CUSE_INIT: %u.%u\n", arg->major, arg->minor);
fuse_log(FUSE_LOG_DEBUG, "flags=0x%08x\n", arg->flags);
}
se->conn.proto_major = arg->major;
se->conn.proto_minor = arg->minor;
@ -212,14 +212,14 @@ void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
se->conn.want = 0;
if (arg->major < 7) {
fprintf(stderr, "cuse: unsupported protocol version: %u.%u\n",
fuse_log(FUSE_LOG_ERR, "cuse: unsupported protocol version: %u.%u\n",
arg->major, arg->minor);
fuse_reply_err(req, EPROTO);
return;
}
if (bufsize < FUSE_MIN_READ_BUFFER) {
fprintf(stderr, "cuse: warning: buffer size too small: %zu\n",
fuse_log(FUSE_LOG_ERR, "cuse: warning: buffer size too small: %zu\n",
bufsize);
bufsize = FUSE_MIN_READ_BUFFER;
}
@ -242,14 +242,14 @@ void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
outarg.dev_minor = cd->dev_minor;
if (se->debug) {
fprintf(stderr, " CUSE_INIT: %u.%u\n",
fuse_log(FUSE_LOG_DEBUG, " CUSE_INIT: %u.%u\n",
outarg.major, outarg.minor);
fprintf(stderr, " flags=0x%08x\n", outarg.flags);
fprintf(stderr, " max_read=0x%08x\n", outarg.max_read);
fprintf(stderr, " max_write=0x%08x\n", outarg.max_write);
fprintf(stderr, " dev_major=%u\n", outarg.dev_major);
fprintf(stderr, " dev_minor=%u\n", outarg.dev_minor);
fprintf(stderr, " dev_info: %.*s\n", cd->dev_info_len,
fuse_log(FUSE_LOG_DEBUG, " flags=0x%08x\n", outarg.flags);
fuse_log(FUSE_LOG_DEBUG, " max_read=0x%08x\n", outarg.max_read);
fuse_log(FUSE_LOG_DEBUG, " max_write=0x%08x\n", outarg.max_write);
fuse_log(FUSE_LOG_DEBUG, " dev_major=%u\n", outarg.dev_major);
fuse_log(FUSE_LOG_DEBUG, " dev_minor=%u\n", outarg.dev_minor);
fuse_log(FUSE_LOG_DEBUG, " dev_info: %.*s\n", cd->dev_info_len,
cd->dev_info);
}
@ -303,9 +303,9 @@ struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
fd = open(devname, O_RDWR);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr, "cuse: device not found, try 'modprobe cuse' first\n");
fuse_log(FUSE_LOG_ERR, "cuse: device not found, try 'modprobe cuse' first\n");
else
fprintf(stderr, "cuse: failed to open %s: %s\n",
fuse_log(FUSE_LOG_ERR, "cuse: failed to open %s: %s\n",
devname, strerror(errno));
goto err_se;
}

149
lib/fuse.c
View File

@ -214,12 +214,12 @@ static int fuse_register_module(const char *name,
mod = calloc(1, sizeof(struct fuse_module));
if (!mod) {
fprintf(stderr, "fuse: failed to allocate module\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate module\n");
return -1;
}
mod->name = strdup(name);
if (!mod->name) {
fprintf(stderr, "fuse: failed to allocate module name\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate module name\n");
free(mod);
return -1;
}
@ -256,19 +256,19 @@ static int fuse_load_so_module(const char *module)
tmp = malloc(strlen(module) + 64);
if (!tmp) {
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
return -1;
}
sprintf(tmp, "libfusemod_%s.so", module);
so = calloc(1, sizeof(struct fusemod_so));
if (!so) {
fprintf(stderr, "fuse: failed to allocate module so\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate module so\n");
goto out;
}
so->handle = dlopen(tmp, RTLD_NOW);
if (so->handle == NULL) {
fprintf(stderr, "fuse: dlopen(%s) failed: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: dlopen(%s) failed: %s\n",
tmp, dlerror());
goto out_free_so;
}
@ -276,7 +276,7 @@ static int fuse_load_so_module(const char *module)
sprintf(tmp, "fuse_module_%s_factory", module);
*(void**)(&factory) = dlsym(so->handle, tmp);
if (factory == NULL) {
fprintf(stderr, "fuse: symbol <%s> not found in module: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: symbol <%s> not found in module: %s\n",
tmp, dlerror());
goto out_dlclose;
}
@ -481,7 +481,8 @@ static void free_slab(struct fuse *f, struct node_slab *slab)
list_del(&slab->list);
res = munmap(slab, f->pagesize);
if (res == -1)
fprintf(stderr, "fuse warning: munmap(%p) failed\n", slab);
fuse_log(FUSE_LOG_WARNING, "fuse warning: munmap(%p) failed\n",
slab);
}
static void free_node_mem(struct fuse *f, struct node *node)
@ -540,7 +541,7 @@ static struct node *get_node(struct fuse *f, fuse_ino_t nodeid)
{
struct node *node = get_node_nocheck(f, nodeid);
if (!node) {
fprintf(stderr, "fuse internal error: node %llu not found\n",
fuse_log(FUSE_LOG_ERR, "fuse internal error: node %llu not found\n",
(unsigned long long) nodeid);
abort();
}
@ -754,7 +755,7 @@ static void unhash_name(struct fuse *f, struct node *node)
remerge_name(f);
return;
}
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse internal error: unable to unhash node: %llu\n",
(unsigned long long) node->nodeid);
abort();
@ -819,7 +820,7 @@ static int hash_name(struct fuse *f, struct node *node, fuse_ino_t parentid,
static void delete_node(struct fuse *f, struct node *node)
{
if (f->conf.debug)
fprintf(stderr, "DELETE: %llu\n",
fuse_log(FUSE_LOG_DEBUG, "DELETE: %llu\n",
(unsigned long long) node->nodeid);
assert(node->treelock == 0);
@ -1165,10 +1166,10 @@ static void debug_path(struct fuse *f, const char *msg, fuse_ino_t nodeid,
wnode = lookup_node(f, nodeid, name);
if (wnode) {
fprintf(stderr, "%s %llu (w)\n",
fuse_log(FUSE_LOG_DEBUG, "%s %llu (w)\n",
msg, (unsigned long long) wnode->nodeid);
} else {
fprintf(stderr, "%s %llu\n",
fuse_log(FUSE_LOG_DEBUG, "%s %llu\n",
msg, (unsigned long long) nodeid);
}
}
@ -1479,7 +1480,7 @@ static int rename_node(struct fuse *f, fuse_ino_t olddir, const char *oldname,
if (newnode != NULL) {
if (hide) {
fprintf(stderr, "fuse: hidden file got created during hiding\n");
fuse_log(FUSE_LOG_ERR, "fuse: hidden file got created during hiding\n");
err = -EBUSY;
goto out;
}
@ -1632,7 +1633,7 @@ int fuse_fs_getattr(struct fuse_fs *fs, const char *path, struct stat *buf,
if (fs->op.getattr) {
if (fs->debug) {
char buf[10];
fprintf(stderr, "getattr[%s] %s\n",
fuse_log(FUSE_LOG_DEBUG, "getattr[%s] %s\n",
file_info_string(fi, buf, sizeof(buf)),
path);
}
@ -1648,7 +1649,7 @@ int fuse_fs_rename(struct fuse_fs *fs, const char *oldpath,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.rename) {
if (fs->debug)
fprintf(stderr, "rename %s %s 0x%x\n", oldpath, newpath,
fuse_log(FUSE_LOG_DEBUG, "rename %s %s 0x%x\n", oldpath, newpath,
flags);
return fs->op.rename(oldpath, newpath, flags);
@ -1662,7 +1663,7 @@ int fuse_fs_unlink(struct fuse_fs *fs, const char *path)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.unlink) {
if (fs->debug)
fprintf(stderr, "unlink %s\n", path);
fuse_log(FUSE_LOG_DEBUG, "unlink %s\n", path);
return fs->op.unlink(path);
} else {
@ -1675,7 +1676,7 @@ int fuse_fs_rmdir(struct fuse_fs *fs, const char *path)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.rmdir) {
if (fs->debug)
fprintf(stderr, "rmdir %s\n", path);
fuse_log(FUSE_LOG_DEBUG, "rmdir %s\n", path);
return fs->op.rmdir(path);
} else {
@ -1688,7 +1689,7 @@ int fuse_fs_symlink(struct fuse_fs *fs, const char *linkname, const char *path)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.symlink) {
if (fs->debug)
fprintf(stderr, "symlink %s %s\n", linkname, path);
fuse_log(FUSE_LOG_DEBUG, "symlink %s %s\n", linkname, path);
return fs->op.symlink(linkname, path);
} else {
@ -1701,7 +1702,7 @@ int fuse_fs_link(struct fuse_fs *fs, const char *oldpath, const char *newpath)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.link) {
if (fs->debug)
fprintf(stderr, "link %s %s\n", oldpath, newpath);
fuse_log(FUSE_LOG_DEBUG, "link %s %s\n", oldpath, newpath);
return fs->op.link(oldpath, newpath);
} else {
@ -1715,7 +1716,7 @@ int fuse_fs_release(struct fuse_fs *fs, const char *path,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.release) {
if (fs->debug)
fprintf(stderr, "release%s[%llu] flags: 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, "release%s[%llu] flags: 0x%x\n",
fi->flush ? "+flush" : "",
(unsigned long long) fi->fh, fi->flags);
@ -1733,13 +1734,13 @@ int fuse_fs_opendir(struct fuse_fs *fs, const char *path,
int err;
if (fs->debug)
fprintf(stderr, "opendir flags: 0x%x %s\n", fi->flags,
fuse_log(FUSE_LOG_DEBUG, "opendir flags: 0x%x %s\n", fi->flags,
path);
err = fs->op.opendir(path, fi);
if (fs->debug && !err)
fprintf(stderr, " opendir[%llu] flags: 0x%x %s\n",
fuse_log(FUSE_LOG_DEBUG, " opendir[%llu] flags: 0x%x %s\n",
(unsigned long long) fi->fh, fi->flags, path);
return err;
@ -1756,13 +1757,13 @@ int fuse_fs_open(struct fuse_fs *fs, const char *path,
int err;
if (fs->debug)
fprintf(stderr, "open flags: 0x%x %s\n", fi->flags,
fuse_log(FUSE_LOG_DEBUG, "open flags: 0x%x %s\n", fi->flags,
path);
err = fs->op.open(path, fi);
if (fs->debug && !err)
fprintf(stderr, " open[%llu] flags: 0x%x %s\n",
fuse_log(FUSE_LOG_DEBUG, " open[%llu] flags: 0x%x %s\n",
(unsigned long long) fi->fh, fi->flags, path);
return err;
@ -1792,7 +1793,7 @@ int fuse_fs_read_buf(struct fuse_fs *fs, const char *path,
int res;
if (fs->debug)
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
"read[%llu] %zu bytes from %llu flags: 0x%x\n",
(unsigned long long) fi->fh,
size, (unsigned long long) off, fi->flags);
@ -1822,12 +1823,12 @@ int fuse_fs_read_buf(struct fuse_fs *fs, const char *path,
}
if (fs->debug && res >= 0)
fprintf(stderr, " read[%llu] %zu bytes from %llu\n",
fuse_log(FUSE_LOG_DEBUG, " read[%llu] %zu bytes from %llu\n",
(unsigned long long) fi->fh,
fuse_buf_size(*bufp),
(unsigned long long) off);
if (res >= 0 && fuse_buf_size(*bufp) > size)
fprintf(stderr, "fuse: read too many bytes\n");
fuse_log(FUSE_LOG_ERR, "fuse: read too many bytes\n");
if (res < 0)
return res;
@ -1846,7 +1847,7 @@ int fuse_fs_read(struct fuse_fs *fs, const char *path, char *mem, size_t size,
int res;
if (fs->debug)
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
"read[%llu] %zu bytes from %llu flags: 0x%x\n",
(unsigned long long) fi->fh,
size, (unsigned long long) off, fi->flags);
@ -1867,12 +1868,12 @@ int fuse_fs_read(struct fuse_fs *fs, const char *path, char *mem, size_t size,
}
if (fs->debug && res >= 0)
fprintf(stderr, " read[%llu] %u bytes from %llu\n",
fuse_log(FUSE_LOG_DEBUG, " read[%llu] %u bytes from %llu\n",
(unsigned long long) fi->fh,
res,
(unsigned long long) off);
if (res >= 0 && res > (int) size)
fprintf(stderr, "fuse: read too many bytes\n");
fuse_log(FUSE_LOG_ERR, "fuse: read too many bytes\n");
return res;
} else {
@ -1891,7 +1892,7 @@ int fuse_fs_write_buf(struct fuse_fs *fs, const char *path,
assert(buf->idx == 0 && buf->off == 0);
if (fs->debug)
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
"write%s[%llu] %zu bytes to %llu flags: 0x%x\n",
fi->writepage ? "page" : "",
(unsigned long long) fi->fh,
@ -1931,12 +1932,12 @@ out_free:
}
out:
if (fs->debug && res >= 0)
fprintf(stderr, " write%s[%llu] %u bytes to %llu\n",
fuse_log(FUSE_LOG_DEBUG, " write%s[%llu] %u bytes to %llu\n",
fi->writepage ? "page" : "",
(unsigned long long) fi->fh, res,
(unsigned long long) off);
if (res > (int) size)
fprintf(stderr, "fuse: wrote too many bytes\n");
fuse_log(FUSE_LOG_ERR, "fuse: wrote too many bytes\n");
return res;
} else {
@ -1960,7 +1961,7 @@ int fuse_fs_fsync(struct fuse_fs *fs, const char *path, int datasync,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.fsync) {
if (fs->debug)
fprintf(stderr, "fsync[%llu] datasync: %i\n",
fuse_log(FUSE_LOG_DEBUG, "fsync[%llu] datasync: %i\n",
(unsigned long long) fi->fh, datasync);
return fs->op.fsync(path, datasync, fi);
@ -1975,7 +1976,7 @@ int fuse_fs_fsyncdir(struct fuse_fs *fs, const char *path, int datasync,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.fsyncdir) {
if (fs->debug)
fprintf(stderr, "fsyncdir[%llu] datasync: %i\n",
fuse_log(FUSE_LOG_DEBUG, "fsyncdir[%llu] datasync: %i\n",
(unsigned long long) fi->fh, datasync);
return fs->op.fsyncdir(path, datasync, fi);
@ -1990,7 +1991,7 @@ int fuse_fs_flush(struct fuse_fs *fs, const char *path,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.flush) {
if (fs->debug)
fprintf(stderr, "flush[%llu]\n",
fuse_log(FUSE_LOG_DEBUG, "flush[%llu]\n",
(unsigned long long) fi->fh);
return fs->op.flush(path, fi);
@ -2004,7 +2005,7 @@ int fuse_fs_statfs(struct fuse_fs *fs, const char *path, struct statvfs *buf)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.statfs) {
if (fs->debug)
fprintf(stderr, "statfs %s\n", path);
fuse_log(FUSE_LOG_DEBUG, "statfs %s\n", path);
return fs->op.statfs(path, buf);
} else {
@ -2020,7 +2021,7 @@ int fuse_fs_releasedir(struct fuse_fs *fs, const char *path,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.releasedir) {
if (fs->debug)
fprintf(stderr, "releasedir[%llu] flags: 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, "releasedir[%llu] flags: 0x%x\n",
(unsigned long long) fi->fh, fi->flags);
return fs->op.releasedir(path, fi);
@ -2037,7 +2038,7 @@ int fuse_fs_readdir(struct fuse_fs *fs, const char *path, void *buf,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.readdir) {
if (fs->debug) {
fprintf(stderr, "readdir%s[%llu] from %llu\n",
fuse_log(FUSE_LOG_DEBUG, "readdir%s[%llu] from %llu\n",
(flags & FUSE_READDIR_PLUS) ? "plus" : "",
(unsigned long long) fi->fh,
(unsigned long long) off);
@ -2057,7 +2058,7 @@ int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode,
int err;
if (fs->debug)
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
"create flags: 0x%x %s 0%o umask=0%03o\n",
fi->flags, path, mode,
fuse_get_context()->umask);
@ -2065,7 +2066,7 @@ int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode,
err = fs->op.create(path, mode, fi);
if (fs->debug && !err)
fprintf(stderr, " create[%llu] flags: 0x%x %s\n",
fuse_log(FUSE_LOG_DEBUG, " create[%llu] flags: 0x%x %s\n",
(unsigned long long) fi->fh, fi->flags, path);
return err;
@ -2080,7 +2081,7 @@ int fuse_fs_lock(struct fuse_fs *fs, const char *path,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.lock) {
if (fs->debug)
fprintf(stderr, "lock[%llu] %s %s start: %llu len: %llu pid: %llu\n",
fuse_log(FUSE_LOG_DEBUG, "lock[%llu] %s %s start: %llu len: %llu pid: %llu\n",
(unsigned long long) fi->fh,
(cmd == F_GETLK ? "F_GETLK" :
(cmd == F_SETLK ? "F_SETLK" :
@ -2107,7 +2108,7 @@ int fuse_fs_flock(struct fuse_fs *fs, const char *path,
if (fs->debug) {
int xop = op & ~LOCK_NB;
fprintf(stderr, "lock[%llu] %s%s\n",
fuse_log(FUSE_LOG_DEBUG, "lock[%llu] %s%s\n",
(unsigned long long) fi->fh,
xop == LOCK_SH ? "LOCK_SH" :
(xop == LOCK_EX ? "LOCK_EX" :
@ -2127,7 +2128,7 @@ int fuse_fs_chown(struct fuse_fs *fs, const char *path, uid_t uid,
if (fs->op.chown) {
if (fs->debug) {
char buf[10];
fprintf(stderr, "chown[%s] %s %lu %lu\n",
fuse_log(FUSE_LOG_DEBUG, "chown[%s] %s %lu %lu\n",
file_info_string(fi, buf, sizeof(buf)),
path, (unsigned long) uid, (unsigned long) gid);
}
@ -2144,7 +2145,7 @@ int fuse_fs_truncate(struct fuse_fs *fs, const char *path, off_t size,
if (fs->op.truncate) {
if (fs->debug) {
char buf[10];
fprintf(stderr, "truncate[%s] %llu\n",
fuse_log(FUSE_LOG_DEBUG, "truncate[%s] %llu\n",
file_info_string(fi, buf, sizeof(buf)),
(unsigned long long) size);
}
@ -2161,7 +2162,7 @@ int fuse_fs_utimens(struct fuse_fs *fs, const char *path,
if (fs->op.utimens) {
if (fs->debug) {
char buf[10];
fprintf(stderr, "utimens[%s] %s %li.%09lu %li.%09lu\n",
fuse_log(FUSE_LOG_DEBUG, "utimens[%s] %s %li.%09lu %li.%09lu\n",
file_info_string(fi, buf, sizeof(buf)),
path, tv[0].tv_sec, tv[0].tv_nsec,
tv[1].tv_sec, tv[1].tv_nsec);
@ -2177,7 +2178,7 @@ int fuse_fs_access(struct fuse_fs *fs, const char *path, int mask)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.access) {
if (fs->debug)
fprintf(stderr, "access %s 0%o\n", path, mask);
fuse_log(FUSE_LOG_DEBUG, "access %s 0%o\n", path, mask);
return fs->op.access(path, mask);
} else {
@ -2191,7 +2192,7 @@ int fuse_fs_readlink(struct fuse_fs *fs, const char *path, char *buf,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.readlink) {
if (fs->debug)
fprintf(stderr, "readlink %s %lu\n", path,
fuse_log(FUSE_LOG_DEBUG, "readlink %s %lu\n", path,
(unsigned long) len);
return fs->op.readlink(path, buf, len);
@ -2206,7 +2207,7 @@ int fuse_fs_mknod(struct fuse_fs *fs, const char *path, mode_t mode,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.mknod) {
if (fs->debug)
fprintf(stderr, "mknod %s 0%o 0x%llx umask=0%03o\n",
fuse_log(FUSE_LOG_DEBUG, "mknod %s 0%o 0x%llx umask=0%03o\n",
path, mode, (unsigned long long) rdev,
fuse_get_context()->umask);
@ -2221,7 +2222,7 @@ int fuse_fs_mkdir(struct fuse_fs *fs, const char *path, mode_t mode)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.mkdir) {
if (fs->debug)
fprintf(stderr, "mkdir %s 0%o umask=0%03o\n",
fuse_log(FUSE_LOG_DEBUG, "mkdir %s 0%o umask=0%03o\n",
path, mode, fuse_get_context()->umask);
return fs->op.mkdir(path, mode);
@ -2236,7 +2237,7 @@ int fuse_fs_setxattr(struct fuse_fs *fs, const char *path, const char *name,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.setxattr) {
if (fs->debug)
fprintf(stderr, "setxattr %s %s %lu 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, "setxattr %s %s %lu 0x%x\n",
path, name, (unsigned long) size, flags);
return fs->op.setxattr(path, name, value, size, flags);
@ -2251,7 +2252,7 @@ int fuse_fs_getxattr(struct fuse_fs *fs, const char *path, const char *name,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.getxattr) {
if (fs->debug)
fprintf(stderr, "getxattr %s %s %lu\n",
fuse_log(FUSE_LOG_DEBUG, "getxattr %s %s %lu\n",
path, name, (unsigned long) size);
return fs->op.getxattr(path, name, value, size);
@ -2266,7 +2267,7 @@ int fuse_fs_listxattr(struct fuse_fs *fs, const char *path, char *list,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.listxattr) {
if (fs->debug)
fprintf(stderr, "listxattr %s %lu\n",
fuse_log(FUSE_LOG_DEBUG, "listxattr %s %lu\n",
path, (unsigned long) size);
return fs->op.listxattr(path, list, size);
@ -2281,7 +2282,7 @@ int fuse_fs_bmap(struct fuse_fs *fs, const char *path, size_t blocksize,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.bmap) {
if (fs->debug)
fprintf(stderr, "bmap %s blocksize: %lu index: %llu\n",
fuse_log(FUSE_LOG_DEBUG, "bmap %s blocksize: %lu index: %llu\n",
path, (unsigned long) blocksize,
(unsigned long long) *idx);
@ -2296,7 +2297,7 @@ int fuse_fs_removexattr(struct fuse_fs *fs, const char *path, const char *name)
fuse_get_context()->private_data = fs->user_data;
if (fs->op.removexattr) {
if (fs->debug)
fprintf(stderr, "removexattr %s %s\n", path, name);
fuse_log(FUSE_LOG_DEBUG, "removexattr %s %s\n", path, name);
return fs->op.removexattr(path, name);
} else {
@ -2311,7 +2312,7 @@ int fuse_fs_ioctl(struct fuse_fs *fs, const char *path, unsigned int cmd,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.ioctl) {
if (fs->debug)
fprintf(stderr, "ioctl[%llu] 0x%x flags: 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, "ioctl[%llu] 0x%x flags: 0x%x\n",
(unsigned long long) fi->fh, cmd, flags);
return fs->op.ioctl(path, cmd, arg, fi, flags, data);
@ -2328,14 +2329,14 @@ int fuse_fs_poll(struct fuse_fs *fs, const char *path,
int res;
if (fs->debug)
fprintf(stderr, "poll[%llu] ph: %p, events 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, "poll[%llu] ph: %p, events 0x%x\n",
(unsigned long long) fi->fh, ph,
fi->poll_events);
res = fs->op.poll(path, fi, ph, reventsp);
if (fs->debug && !res)
fprintf(stderr, " poll[%llu] revents: 0x%x\n",
fuse_log(FUSE_LOG_DEBUG, " poll[%llu] revents: 0x%x\n",
(unsigned long long) fi->fh, *reventsp);
return res;
@ -2349,7 +2350,7 @@ int fuse_fs_fallocate(struct fuse_fs *fs, const char *path, int mode,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.fallocate) {
if (fs->debug)
fprintf(stderr, "fallocate %s mode %x, offset: %llu, length: %llu\n",
fuse_log(FUSE_LOG_DEBUG, "fallocate %s mode %x, offset: %llu, length: %llu\n",
path,
mode,
(unsigned long long) offset,
@ -2369,7 +2370,7 @@ ssize_t fuse_fs_copy_file_range(struct fuse_fs *fs, const char *path_in,
fuse_get_context()->private_data = fs->user_data;
if (fs->op.copy_file_range) {
if (fs->debug)
fprintf(stderr, "copy_file_range from %s:%llu to "
fuse_log(FUSE_LOG_DEBUG, "copy_file_range from %s:%llu to "
"%s:%llu, length: %llu\n",
path_in,
(unsigned long long) off_in,
@ -2520,7 +2521,7 @@ static int lookup_path(struct fuse *f, fuse_ino_t nodeid,
if (res == 0) {
res = do_lookup(f, nodeid, name, e);
if (res == 0 && f->conf.debug) {
fprintf(stderr, " NODEID: %llu\n",
fuse_log(FUSE_LOG_DEBUG, " NODEID: %llu\n",
(unsigned long long) e->ino);
}
}
@ -2543,7 +2544,7 @@ static struct fuse_context_i *fuse_create_context(struct fuse *f)
abort. If memory is so low that the
context cannot be allocated, there's not
much hope for the filesystem anyway */
fprintf(stderr, "fuse: failed to allocate thread specific data\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate thread specific data\n");
abort();
}
pthread_setspecific(fuse_context_key, c);
@ -2567,7 +2568,7 @@ static int fuse_create_context_key(void)
if (!fuse_context_ref) {
err = pthread_key_create(&fuse_context_key, fuse_freecontext);
if (err) {
fprintf(stderr, "fuse: failed to create thread specific key: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: failed to create thread specific key: %s\n",
strerror(err));
pthread_mutex_unlock(&fuse_context_lock);
return -1;
@ -2680,7 +2681,7 @@ static void fuse_lib_lookup(fuse_req_t req, fuse_ino_t parent,
pthread_mutex_lock(&f->lock);
if (len == 1) {
if (f->conf.debug)
fprintf(stderr, "LOOKUP-DOT\n");
fuse_log(FUSE_LOG_DEBUG, "LOOKUP-DOT\n");
dot = get_node_nocheck(f, parent);
if (dot == NULL) {
pthread_mutex_unlock(&f->lock);
@ -2690,7 +2691,7 @@ static void fuse_lib_lookup(fuse_req_t req, fuse_ino_t parent,
dot->refctr++;
} else {
if (f->conf.debug)
fprintf(stderr, "LOOKUP-DOTDOT\n");
fuse_log(FUSE_LOG_DEBUG, "LOOKUP-DOTDOT\n");
parent = get_node(f, parent)->parent->nodeid;
}
pthread_mutex_unlock(&f->lock);
@ -2702,7 +2703,7 @@ static void fuse_lib_lookup(fuse_req_t req, fuse_ino_t parent,
if (!err) {
struct fuse_intr_data d;
if (f->conf.debug)
fprintf(stderr, "LOOKUP %s\n", path);
fuse_log(FUSE_LOG_DEBUG, "LOOKUP %s\n", path);
fuse_prepare_interrupt(f, req, &d);
err = lookup_path(f, parent, name, path, &e, NULL);
if (err == -ENOENT && f->conf.negative_timeout != 0.0) {
@ -2724,7 +2725,7 @@ static void fuse_lib_lookup(fuse_req_t req, fuse_ino_t parent,
static void do_forget(struct fuse *f, fuse_ino_t ino, uint64_t nlookup)
{
if (f->conf.debug)
fprintf(stderr, "FORGET %llu/%llu\n", (unsigned long long)ino,
fuse_log(FUSE_LOG_DEBUG, "FORGET %llu/%llu\n", (unsigned long long)ino,
(unsigned long long) nlookup);
forget_node(f, ino, nlookup);
}
@ -2792,7 +2793,7 @@ int fuse_fs_chmod(struct fuse_fs *fs, const char *path, mode_t mode,
if (fs->op.chmod) {
if (fs->debug) {
char buf[10];
fprintf(stderr, "chmod[%s] %s %llo\n",
fuse_log(FUSE_LOG_DEBUG, "chmod[%s] %s %llo\n",
file_info_string(fi, buf, sizeof(buf)),
path, (unsigned long long) mode);
}
@ -4765,13 +4766,13 @@ struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size,
struct fuse_fs *fs;
if (sizeof(struct fuse_operations) < op_size) {
fprintf(stderr, "fuse: warning: library too old, some operations may not not work\n");
fuse_log(FUSE_LOG_ERR, "fuse: warning: library too old, some operations may not not work\n");
op_size = sizeof(struct fuse_operations);
}
fs = (struct fuse_fs *) calloc(1, sizeof(struct fuse_fs));
if (!fs) {
fprintf(stderr, "fuse: failed to allocate fuse_fs object\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate fuse_fs object\n");
return NULL;
}
@ -4786,7 +4787,7 @@ static int node_table_init(struct node_table *t)
t->size = NODE_TABLE_MIN_SIZE;
t->array = (struct node **) calloc(1, sizeof(struct node *) * t->size);
if (t->array == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
return -1;
}
t->use = 0;
@ -4838,7 +4839,7 @@ struct fuse *fuse_new_31(struct fuse_args *args,
f = (struct fuse *) calloc(1, sizeof(struct fuse));
if (f == NULL) {
fprintf(stderr, "fuse: failed to allocate fuse object\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate fuse object\n");
goto out;
}
@ -4916,7 +4917,7 @@ struct fuse *fuse_new_31(struct fuse_args *args,
goto out_free_fs;
if (f->conf.debug) {
fprintf(stderr, "nullpath_ok: %i\n", f->conf.nullpath_ok);
fuse_log(FUSE_LOG_DEBUG, "nullpath_ok: %i\n", f->conf.nullpath_ok);
}
/* Trace topmost layer by default */
@ -4933,7 +4934,7 @@ struct fuse *fuse_new_31(struct fuse_args *args,
root = alloc_node(f);
if (root == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
goto out_free_id_table;
}
if (lru_enabled(f)) {

2
lib/fuse_i.h
View File

@ -131,6 +131,8 @@ struct fuse *fuse_new_31(struct fuse_args *args, const struct fuse_operations *o
int fuse_loop_mt_32(struct fuse *f, struct fuse_loop_config *config);
int fuse_session_loop_mt_32(struct fuse_session *se, struct fuse_loop_config *config);
void fuse_log(enum fuse_log_level level, const char *fmt, ...);
#define FUSE_MAX_MAX_PAGES 256
#define FUSE_DEFAULT_MAX_PAGES_PER_REQ 32

41
lib/fuse_log.c Normal file
View File

@ -0,0 +1,41 @@
/*
FUSE: Filesystem in Userspace
Copyright (C) 2019 Red Hat, Inc.
Logging API.
This program can be distributed under the terms of the GNU LGPLv2.
See the file COPYING.LIB
*/
#include "fuse_log.h"
#include "fuse_i.h"
#include <stdarg.h>
#include <stdio.h>
static void default_log_func(
__attribute__(( unused )) enum fuse_log_level level,
const char *fmt, va_list ap)
{
vfprintf(stderr, fmt, ap);
}
static fuse_log_func_t log_func = default_log_func;
void fuse_set_log_func(fuse_log_func_t func)
{
if (!func)
func = default_log_func;
log_func = func;
}
void fuse_log(enum fuse_log_level level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
log_func(level, fmt, ap);
va_end(ap);
}

14
lib/fuse_loop_mt.c
View File

@ -58,7 +58,7 @@ static struct fuse_chan *fuse_chan_new(int fd)
{
struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
if (ch == NULL) {
fprintf(stderr, "fuse: failed to allocate channel\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate channel\n");
return NULL;
}
@ -201,7 +201,7 @@ int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg)
pthread_attr_init(&attr);
stack_size = getenv(ENVNAME_THREAD_STACK);
if (stack_size && pthread_attr_setstacksize(&attr, atoi(stack_size)))
fprintf(stderr, "fuse: invalid stack size: %s\n", stack_size);
fuse_log(FUSE_LOG_ERR, "fuse: invalid stack size: %s\n", stack_size);
/* Disallow signal reception in worker threads */
sigemptyset(&newset);
@ -214,7 +214,7 @@ int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg)
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
pthread_attr_destroy(&attr);
if (res != 0) {
fprintf(stderr, "fuse: error creating thread: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: error creating thread: %s\n",
strerror(res));
return -1;
}
@ -235,7 +235,7 @@ static struct fuse_chan *fuse_clone_chan(struct fuse_mt *mt)
#endif
clonefd = open(devname, O_RDWR | O_CLOEXEC);
if (clonefd == -1) {
fprintf(stderr, "fuse: failed to open %s: %s\n", devname,
fuse_log(FUSE_LOG_ERR, "fuse: failed to open %s: %s\n", devname,
strerror(errno));
return NULL;
}
@ -244,7 +244,7 @@ static struct fuse_chan *fuse_clone_chan(struct fuse_mt *mt)
masterfd = mt->se->fd;
res = ioctl(clonefd, FUSE_DEV_IOC_CLONE, &masterfd);
if (res == -1) {
fprintf(stderr, "fuse: failed to clone device fd: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: failed to clone device fd: %s\n",
strerror(errno));
close(clonefd);
return NULL;
@ -262,7 +262,7 @@ static int fuse_loop_start_thread(struct fuse_mt *mt)
struct fuse_worker *w = malloc(sizeof(struct fuse_worker));
if (!w) {
fprintf(stderr, "fuse: failed to allocate worker structure\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate worker structure\n");
return -1;
}
memset(w, 0, sizeof(struct fuse_worker));
@ -274,7 +274,7 @@ static int fuse_loop_start_thread(struct fuse_mt *mt)
w->ch = fuse_clone_chan(mt);
if(!w->ch) {
/* Don't attempt this again */
fprintf(stderr, "fuse: trying to continue "
fuse_log(FUSE_LOG_ERR, "fuse: trying to continue "
"without -o clone_fd.\n");
mt->clone_fd = 0;
}

94
lib/fuse_lowlevel.c
View File

@ -150,7 +150,7 @@ static struct fuse_req *fuse_ll_alloc_req(struct fuse_session *se)
req = (struct fuse_req *) calloc(1, sizeof(struct fuse_req));
if (req == NULL) {
fprintf(stderr, "fuse: failed to allocate request\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate request\n");
} else {
req->se = se;
req->ctr = 1;
@ -170,15 +170,15 @@ static int fuse_send_msg(struct fuse_session *se, struct fuse_chan *ch,
out->len = iov_length(iov, count);
if (se->debug) {
if (out->unique == 0) {
fprintf(stderr, "NOTIFY: code=%d length=%u\n",
fuse_log(FUSE_LOG_DEBUG, "NOTIFY: code=%d length=%u\n",
out->error, out->len);
} else if (out->error) {
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
" unique: %llu, error: %i (%s), outsize: %i\n",
(unsigned long long) out->unique, out->error,
strerror(-out->error), out->len);
} else {
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
" unique: %llu, success, outsize: %i\n",
(unsigned long long) out->unique, out->len);
}
@ -207,7 +207,7 @@ int fuse_send_reply_iov_nofree(fuse_req_t req, int error, struct iovec *iov,
struct fuse_out_header out;
if (error <= -1000 || error > 0) {
fprintf(stderr, "fuse: bad error value: %i\n", error);
fuse_log(FUSE_LOG_ERR, "fuse: bad error value: %i\n", error);
error = -ERANGE;
}
@ -601,11 +601,11 @@ static int read_back(int fd, char *buf, size_t len)
res = read(fd, buf, len);
if (res == -1) {
fprintf(stderr, "fuse: internal error: failed to read back from pipe: %s\n", strerror(errno));
fuse_log(FUSE_LOG_ERR, "fuse: internal error: failed to read back from pipe: %s\n", strerror(errno));
return -EIO;
}
if (res != len) {
fprintf(stderr, "fuse: internal error: short read back from pipe: %i from %zi\n", res, len);
fuse_log(FUSE_LOG_ERR, "fuse: internal error: short read back from pipe: %i from %zi\n", res, len);
return -EIO;
}
return 0;
@ -714,7 +714,7 @@ static int fuse_send_data_iov(struct fuse_session *se, struct fuse_chan *ch,
if (res != headerlen) {
res = -EIO;
fprintf(stderr, "fuse: short vmsplice to pipe: %u/%zu\n", res,
fuse_log(FUSE_LOG_ERR, "fuse: short vmsplice to pipe: %u/%zu\n", res,
headerlen);
goto clear_pipe;
}
@ -807,7 +807,7 @@ static int fuse_send_data_iov(struct fuse_session *se, struct fuse_chan *ch,
out->len = headerlen + len;
if (se->debug) {
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
" unique: %llu, success, outsize: %i (splice)\n",
(unsigned long long) out->unique, out->len);
}
@ -826,7 +826,7 @@ static int fuse_send_data_iov(struct fuse_session *se, struct fuse_chan *ch,
}
if (res != out->len) {
res = -EIO;
fprintf(stderr, "fuse: short splice from pipe: %u/%u\n",
fuse_log(FUSE_LOG_ERR, "fuse: short splice from pipe: %u/%u\n",
res, out->len);
goto clear_pipe;
}
@ -1396,7 +1396,7 @@ static void do_write_buf(fuse_req_t req, fuse_ino_t nodeid, const void *inarg,
sizeof(struct fuse_write_in);
}
if (bufv.buf[0].size < arg->size) {
fprintf(stderr, "fuse: do_write_buf: buffer size too small\n");
fuse_log(FUSE_LOG_ERR, "fuse: do_write_buf: buffer size too small\n");
fuse_reply_err(req, EIO);
goto out;
}
@ -1724,7 +1724,7 @@ static void do_interrupt(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
(void) nodeid;
if (se->debug)
fprintf(stderr, "INTERRUPT: %llu\n",
fuse_log(FUSE_LOG_DEBUG, "INTERRUPT: %llu\n",
(unsigned long long) arg->unique);
req->u.i.unique = arg->unique;
@ -1877,10 +1877,10 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
(void) nodeid;
if (se->debug) {
fprintf(stderr, "INIT: %u.%u\n", arg->major, arg->minor);
fuse_log(FUSE_LOG_DEBUG, "INIT: %u.%u\n", arg->major, arg->minor);
if (arg->major == 7 && arg->minor >= 6) {
fprintf(stderr, "flags=0x%08x\n", arg->flags);
fprintf(stderr, "max_readahead=0x%08x\n",
fuse_log(FUSE_LOG_DEBUG, "flags=0x%08x\n", arg->flags);
fuse_log(FUSE_LOG_DEBUG, "max_readahead=0x%08x\n",
arg->max_readahead);
}
}
@ -1894,7 +1894,7 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
outarg.minor = FUSE_KERNEL_MINOR_VERSION;
if (arg->major < 7) {
fprintf(stderr, "fuse: unsupported protocol version: %u.%u\n",
fuse_log(FUSE_LOG_ERR, "fuse: unsupported protocol version: %u.%u\n",
arg->major, arg->minor);
fuse_reply_err(req, EPROTO);
return;
@ -1991,7 +1991,7 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
se->conn.time_gran = 1;
if (bufsize < FUSE_MIN_READ_BUFFER) {
fprintf(stderr, "fuse: warning: buffer size too small: %zu\n",
fuse_log(FUSE_LOG_ERR, "fuse: warning: buffer size too small: %zu\n",
bufsize);
bufsize = FUSE_MIN_READ_BUFFER;
}
@ -2005,7 +2005,7 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
se->op.init(se->userdata, &se->conn);
if (se->conn.want & (~se->conn.capable)) {
fprintf(stderr, "fuse: error: filesystem requested capabilities "
fuse_log(FUSE_LOG_ERR, "fuse: error: filesystem requested capabilities "
"0x%x that are not supported by kernel, aborting.\n",
se->conn.want & (~se->conn.capable));
fuse_reply_err(req, EPROTO);
@ -2016,7 +2016,7 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
unsigned max_read_mo = get_max_read(se->mo);
if (se->conn.max_read != max_read_mo) {
fprintf(stderr, "fuse: error: init() and fuse_session_new() "
fuse_log(FUSE_LOG_ERR, "fuse: error: init() and fuse_session_new() "
"requested different maximum read size (%u vs %u)\n",
se->conn.max_read, max_read_mo);
fuse_reply_err(req, EPROTO);
@ -2080,16 +2080,16 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
outarg.time_gran = se->conn.time_gran;
if (se->debug) {
fprintf(stderr, " INIT: %u.%u\n", outarg.major, outarg.minor);
fprintf(stderr, " flags=0x%08x\n", outarg.flags);
fprintf(stderr, " max_readahead=0x%08x\n",
fuse_log(FUSE_LOG_DEBUG, " INIT: %u.%u\n", outarg.major, outarg.minor);
fuse_log(FUSE_LOG_DEBUG, " flags=0x%08x\n", outarg.flags);
fuse_log(FUSE_LOG_DEBUG, " max_readahead=0x%08x\n",
outarg.max_readahead);
fprintf(stderr, " max_write=0x%08x\n", outarg.max_write);
fprintf(stderr, " max_background=%i\n",
fuse_log(FUSE_LOG_DEBUG, " max_write=0x%08x\n", outarg.max_write);
fuse_log(FUSE_LOG_DEBUG, " max_background=%i\n",
outarg.max_background);
fprintf(stderr, " congestion_threshold=%i\n",
fuse_log(FUSE_LOG_DEBUG, " congestion_threshold=%i\n",
outarg.congestion_threshold);
fprintf(stderr, " time_gran=%u\n",
fuse_log(FUSE_LOG_DEBUG, " time_gran=%u\n",
outarg.time_gran);
}
if (arg->minor < 5)
@ -2326,7 +2326,7 @@ static void fuse_ll_retrieve_reply(struct fuse_notify_req *nreq,
sizeof(struct fuse_notify_retrieve_in);
if (bufv.buf[0].size < arg->size) {
fprintf(stderr, "fuse: retrieve reply: buffer size too small\n");
fuse_log(FUSE_LOG_ERR, "fuse: retrieve reply: buffer size too small\n");
fuse_reply_none(req);
goto out;
}
@ -2489,11 +2489,11 @@ static int fuse_ll_copy_from_pipe(struct fuse_bufvec *dst,
{
ssize_t res = fuse_buf_copy(dst, src, 0);
if (res < 0) {
fprintf(stderr, "fuse: copy from pipe: %s\n", strerror(-res));
fuse_log(FUSE_LOG_ERR, "fuse: copy from pipe: %s\n", strerror(-res));
return res;
}
if ((size_t)res < fuse_buf_size(dst)) {
fprintf(stderr, "fuse: copy from pipe: short read\n");
fuse_log(FUSE_LOG_ERR, "fuse: copy from pipe: short read\n");
return -1;
}
return 0;
@ -2525,7 +2525,7 @@ void fuse_session_process_buf_int(struct fuse_session *se,
mbuf = malloc(tmpbuf.buf[0].size);
if (mbuf == NULL) {
fprintf(stderr, "fuse: failed to allocate header\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate header\n");
goto clear_pipe;
}
tmpbuf.buf[0].mem = mbuf;
@ -2540,7 +2540,7 @@ void fuse_session_process_buf_int(struct fuse_session *se,
}
if (se->debug) {
fprintf(stderr,
fuse_log(FUSE_LOG_DEBUG,
"unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u\n",
(unsigned long long) in->unique,
opname((enum fuse_opcode) in->opcode), in->opcode,
@ -2757,7 +2757,7 @@ int fuse_session_receive_buf_int(struct fuse_session *se, struct fuse_buf *buf,
}
if (res < sizeof(struct fuse_in_header)) {
fprintf(stderr, "short splice from fuse device\n");
fuse_log(FUSE_LOG_ERR, "short splice from fuse device\n");
return -EIO;
}
@ -2780,7 +2780,7 @@ int fuse_session_receive_buf_int(struct fuse_session *se, struct fuse_buf *buf,
if (!buf->mem) {
buf->mem = malloc(se->bufsize);
if (!buf->mem) {
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate read buffer\n");
return -ENOMEM;
}
@ -2791,13 +2791,13 @@ int fuse_session_receive_buf_int(struct fuse_session *se, struct fuse_buf *buf,
res = fuse_buf_copy(&dst, &src, 0);
if (res < 0) {
fprintf(stderr, "fuse: copy from pipe: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: copy from pipe: %s\n",
strerror(-res));
fuse_ll_clear_pipe(se);
return res;
}
if (res < tmpbuf.size) {
fprintf(stderr, "fuse: copy from pipe: short read\n");
fuse_log(FUSE_LOG_ERR, "fuse: copy from pipe: short read\n");
fuse_ll_clear_pipe(se);
return -EIO;
}
@ -2817,7 +2817,7 @@ fallback:
if (!buf->mem) {
buf->mem = malloc(se->bufsize);
if (!buf->mem) {
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate read buffer\n");
return -ENOMEM;
}
@ -2849,7 +2849,7 @@ restart:
return -err;
}
if ((size_t) res < sizeof(struct fuse_in_header)) {
fprintf(stderr, "short read on fuse device\n");
fuse_log(FUSE_LOG_ERR, "short read on fuse device\n");
return -EIO;
}
@ -2867,18 +2867,18 @@ struct fuse_session *fuse_session_new(struct fuse_args *args,
struct mount_opts *mo;
if (sizeof(struct fuse_lowlevel_ops) < op_size) {
fprintf(stderr, "fuse: warning: library too old, some operations may not work\n");
fuse_log(FUSE_LOG_ERR, "fuse: warning: library too old, some operations may not work\n");
op_size = sizeof(struct fuse_lowlevel_ops);
}
if (args->argc == 0) {
fprintf(stderr, "fuse: empty argv passed to fuse_session_new().\n");
fuse_log(FUSE_LOG_ERR, "fuse: empty argv passed to fuse_session_new().\n");
return NULL;
}
se = (struct fuse_session *) calloc(1, sizeof(struct fuse_session));
if (se == NULL) {
fprintf(stderr, "fuse: failed to allocate fuse object\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate fuse object\n");
goto out1;
}
se->fd = -1;
@ -2904,19 +2904,19 @@ struct fuse_session *fuse_session_new(struct fuse_args *args,
if(args->argc == 1 &&
args->argv[0][0] == '-') {
fprintf(stderr, "fuse: warning: argv[0] looks like an option, but "
fuse_log(FUSE_LOG_ERR, "fuse: warning: argv[0] looks like an option, but "
"will be ignored\n");
} else if (args->argc != 1) {
int i;
fprintf(stderr, "fuse: unknown option(s): `");
fuse_log(FUSE_LOG_ERR, "fuse: unknown option(s): `");
for(i = 1; i < args->argc-1; i++)
fprintf(stderr, "%s ", args->argv[i]);
fprintf(stderr, "%s'\n", args->argv[i]);
fuse_log(FUSE_LOG_ERR, "%s ", args->argv[i]);
fuse_log(FUSE_LOG_ERR, "%s'\n", args->argv[i]);
goto out4;
}
if (se->debug)
fprintf(stderr, "FUSE library version: %s\n", PACKAGE_VERSION);
fuse_log(FUSE_LOG_DEBUG, "FUSE library version: %s\n", PACKAGE_VERSION);
se->bufsize = FUSE_MAX_MAX_PAGES * getpagesize() +
FUSE_BUFFER_HEADER_SIZE;
@ -2929,7 +2929,7 @@ struct fuse_session *fuse_session_new(struct fuse_args *args,
err = pthread_key_create(&se->pipe_key, fuse_ll_pipe_destructor);
if (err) {
fprintf(stderr, "fuse: failed to create thread specific key: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: failed to create thread specific key: %s\n",
strerror(err));
goto out5;
}
@ -2976,7 +2976,7 @@ int fuse_session_mount(struct fuse_session *se, const char *mountpoint)
fd = fuse_mnt_parse_fuse_fd(mountpoint);
if (fd != -1) {
if (fcntl(fd, F_GETFD) == -1) {
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: Invalid file descriptor /dev/fd/%u\n",
fd);
return -1;

9
lib/fuse_opt.c
View File

@ -10,6 +10,7 @@
*/
#include "config.h"
#include "fuse_i.h"
#include "fuse_opt.h"
#include "fuse_misc.h"
@ -47,7 +48,7 @@ void fuse_opt_free_args(struct fuse_args *args)
static int alloc_failed(void)
{
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
return -1;
}
@ -99,7 +100,7 @@ int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg)
static int next_arg(struct fuse_opt_context *ctx, const char *opt)
{
if (ctx->argctr + 1 >= ctx->argc) {
fprintf(stderr, "fuse: missing argument after `%s'\n", opt);
fuse_log(FUSE_LOG_ERR, "fuse: missing argument after `%s'\n", opt);
return -1;
}
ctx->argctr++;
@ -217,7 +218,7 @@ static int process_opt_param(void *var, const char *format, const char *param,
*s = copy;
} else {
if (sscanf(param, format, var) != 1) {
fprintf(stderr, "fuse: invalid parameter in option `%s'\n", arg);
fuse_log(FUSE_LOG_ERR, "fuse: invalid parameter in option `%s'\n", arg);
return -1;
}
}
@ -336,7 +337,7 @@ static int process_option_group(struct fuse_opt_context *ctx, const char *opts)
char *copy = strdup(opts);
if (!copy) {
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
return -1;
}
res = process_real_option_group(ctx, copy);

4
lib/fuse_signals.c
View File

@ -24,7 +24,7 @@ static void exit_handler(int sig)
if (fuse_instance) {
fuse_session_exit(fuse_instance);
if(sig <= 0) {
fprintf(stderr, "assertion error: signal value <= 0\n");
fuse_log(FUSE_LOG_ERR, "assertion error: signal value <= 0\n");
abort();
}
fuse_instance->error = sig;
@ -79,7 +79,7 @@ int fuse_set_signal_handlers(struct fuse_session *se)
void fuse_remove_signal_handlers(struct fuse_session *se)
{
if (fuse_instance != se)
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: fuse_remove_signal_handlers: unknown session\n");
else
fuse_instance = NULL;

10
lib/helper.c
View File

@ -154,14 +154,14 @@ static int fuse_helper_opt_proc(void *data, const char *arg, int key,
char mountpoint[PATH_MAX] = "";
if (realpath(arg, mountpoint) == NULL) {
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: bad mount point `%s': %s\n",
arg, strerror(errno));
return -1;
}
return fuse_opt_add_opt(&opts->mountpoint, mountpoint);
} else {
fprintf(stderr, "fuse: invalid argument `%s'\n", arg);
fuse_log(FUSE_LOG_ERR, "fuse: invalid argument `%s'\n", arg);
return -1;
}
@ -186,7 +186,7 @@ static int add_default_subtype(const char *progname, struct fuse_args *args)
subtype_opt = (char *) malloc(strlen(basename) + 64);
if (subtype_opt == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse: memory allocation failed\n");
return -1;
}
#ifdef __FreeBSD__
@ -307,7 +307,7 @@ int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
if (!opts.show_help &&
!opts.mountpoint) {
fprintf(stderr, "error: no mountpoint specified\n");
fuse_log(FUSE_LOG_ERR, "error: no mountpoint specified\n");
res = 2;
goto out1;
}
@ -411,7 +411,7 @@ struct fuse_conn_info_opts* fuse_parse_conn_info_opts(struct fuse_args *args)
opts = calloc(1, sizeof(struct fuse_conn_info_opts));
if(opts == NULL) {
fprintf(stderr, "calloc failed\n");
fuse_log(FUSE_LOG_ERR, "calloc failed\n");
return NULL;
}
if(fuse_opt_parse(args, opts, conn_info_opt_spec, NULL) == -1) {

3
lib/meson.build
View File

@ -1,7 +1,8 @@
libfuse_sources = ['fuse.c', 'fuse_i.h', 'fuse_loop.c', 'fuse_loop_mt.c',
'fuse_lowlevel.c', 'fuse_misc.h', 'fuse_opt.c',
'fuse_signals.c', 'buffer.c', 'cuse_lowlevel.c',
'helper.c', 'modules/subdir.c', 'mount_util.c' ]
'helper.c', 'modules/subdir.c', 'mount_util.c',
'fuse_log.c' ]
if host_machine.system().startswith('linux')
libfuse_sources += [ 'mount.c' ]

8
lib/modules/iconv.c
View File

@ -659,7 +659,7 @@ static struct fuse_fs *iconv_new(struct fuse_args *args,
ic = calloc(1, sizeof(struct iconv));
if (ic == NULL) {
fprintf(stderr, "fuse-iconv: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse-iconv: memory allocation failed\n");
return NULL;
}
@ -667,7 +667,7 @@ static struct fuse_fs *iconv_new(struct fuse_args *args,
goto out_free;
if (!next[0] || next[1]) {
fprintf(stderr, "fuse-iconv: exactly one next filesystem required\n");
fuse_log(FUSE_LOG_ERR, "fuse-iconv: exactly one next filesystem required\n");
goto out_free;
}
@ -678,13 +678,13 @@ static struct fuse_fs *iconv_new(struct fuse_args *args,
old = strdup(setlocale(LC_CTYPE, ""));
ic->tofs = iconv_open(from, to);
if (ic->tofs == (iconv_t) -1) {
fprintf(stderr, "fuse-iconv: cannot convert from %s to %s\n",
fuse_log(FUSE_LOG_ERR, "fuse-iconv: cannot convert from %s to %s\n",
to, from);
goto out_free;
}
ic->fromfs = iconv_open(to, from);
if (ic->tofs == (iconv_t) -1) {
fprintf(stderr, "fuse-iconv: cannot convert from %s to %s\n",
fuse_log(FUSE_LOG_ERR, "fuse-iconv: cannot convert from %s to %s\n",
from, to);
goto out_iconv_close_to;
}

8
lib/modules/subdir.c
View File

@ -633,7 +633,7 @@ static struct fuse_fs *subdir_new(struct fuse_args *args,
d = calloc(1, sizeof(struct subdir));
if (d == NULL) {
fprintf(stderr, "fuse-subdir: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse-subdir: memory allocation failed\n");
return NULL;
}
@ -641,19 +641,19 @@ static struct fuse_fs *subdir_new(struct fuse_args *args,
goto out_free;
if (!next[0] || next[1]) {
fprintf(stderr, "fuse-subdir: exactly one next filesystem required\n");
fuse_log(FUSE_LOG_ERR, "fuse-subdir: exactly one next filesystem required\n");
goto out_free;
}
if (!d->base) {
fprintf(stderr, "fuse-subdir: missing 'subdir' option\n");
fuse_log(FUSE_LOG_ERR, "fuse-subdir: missing 'subdir' option\n");
goto out_free;
}
if (d->base[0] && d->base[strlen(d->base)-1] != '/') {
char *tmp = realloc(d->base, strlen(d->base) + 2);
if (!tmp) {
fprintf(stderr, "fuse-subdir: memory allocation failed\n");
fuse_log(FUSE_LOG_ERR, "fuse-subdir: memory allocation failed\n");
goto out_free;
}
d->base = tmp;

20
lib/mount.c
View File

@ -175,7 +175,7 @@ static void set_mount_flag(const char *s, int *flags)
return;
}
}
fprintf(stderr, "fuse: internal error, can't find mount flag\n");
fuse_log(FUSE_LOG_ERR, "fuse: internal error, can't find mount flag\n");
abort();
}
@ -248,7 +248,7 @@ static int receive_fd(int fd)
cmsg = CMSG_FIRSTHDR(&msg);
if (cmsg->cmsg_type != SCM_RIGHTS) {
fprintf(stderr, "got control message of unknown type %d\n",
fuse_log(FUSE_LOG_ERR, "got control message of unknown type %d\n",
cmsg->cmsg_type);
return -1;
}
@ -312,7 +312,7 @@ static int fuse_mount_fusermount(const char *mountpoint, struct mount_opts *mo,
int rv;
if (!mountpoint) {
fprintf(stderr, "fuse: missing mountpoint parameter\n");
fuse_log(FUSE_LOG_ERR, "fuse: missing mountpoint parameter\n");
return -1;
}
@ -393,13 +393,13 @@ static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
int res;
if (!mnt) {
fprintf(stderr, "fuse: missing mountpoint parameter\n");
fuse_log(FUSE_LOG_ERR, "fuse: missing mountpoint parameter\n");
return -1;
}
res = stat(mnt, &stbuf);
if (res == -1) {
fprintf(stderr ,"fuse: failed to access mountpoint %s: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: failed to access mountpoint %s: %s\n",
mnt, strerror(errno));
return -1;
}
@ -413,9 +413,9 @@ static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
fd = open(devname, O_RDWR | O_CLOEXEC);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr, "fuse: device not found, try 'modprobe fuse' first\n");
fuse_log(FUSE_LOG_ERR, "fuse: device not found, try 'modprobe fuse' first\n");
else
fprintf(stderr, "fuse: failed to open %s: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: failed to open %s: %s\n",
devname, strerror(errno));
return -1;
}
@ -435,7 +435,7 @@ static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
type = malloc((mo->subtype ? strlen(mo->subtype) : 0) + 32);
if (!type || !source) {
fprintf(stderr, "fuse: failed to allocate memory\n");
fuse_log(FUSE_LOG_ERR, "fuse: failed to allocate memory\n");
goto out_close;
}
@ -471,10 +471,10 @@ static int fuse_mount_sys(const char *mnt, struct mount_opts *mo,
int errno_save = errno;
if (mo->blkdev && errno == ENODEV &&
!fuse_mnt_check_fuseblk())
fprintf(stderr,
fuse_log(FUSE_LOG_ERR,
"fuse: 'fuseblk' support missing\n");
else
fprintf(stderr, "fuse: mount failed: %s\n",
fuse_log(FUSE_LOG_ERR, "fuse: mount failed: %s\n",
strerror(errno_save));
}

2
lib/mount_bsd.c
View File

@ -161,7 +161,7 @@ static int fuse_mount_core(const char *mountpoint, const char *opts)
fd = strtol(fdnam, &ep, 10);
if (*ep != '\0') {
fprintf(stderr, "invalid value given in FUSE_DEV_FD\n");
fuse_log(FUSE_LOG_ERR, "invalid value given in FUSE_DEV_FD\n");
return -1;
}