diff options
Diffstat (limited to 'sysdeps/mach/hurd/getcwd.c')
| -rw-r--r-- | sysdeps/mach/hurd/getcwd.c | 59 |
1 files changed, 31 insertions, 28 deletions
diff --git a/sysdeps/mach/hurd/getcwd.c b/sysdeps/mach/hurd/getcwd.c index 02699a7e84..ed8ed96697 100644 --- a/sysdeps/mach/hurd/getcwd.c +++ b/sysdeps/mach/hurd/getcwd.c @@ -39,11 +39,10 @@ char * __getcwd (char *buf, size_t size) { error_t err; - dev_t rootdev, thisdev; + mach_port_t rootid, thisid, rootdevid, thisdevid; ino_t rootino, thisino; char *file_name; register char *file_namep; - struct stat st; file_t parent; char *dirbuf = NULL; unsigned int dirbufsize = 0; @@ -51,6 +50,10 @@ __getcwd (char *buf, size_t size) inline void cleanup (void) { __mach_port_deallocate (__mach_task_self (), parent); + __mach_port_deallocate (__mach_task_self (), thisid); + __mach_port_deallocate (__mach_task_self (), thisdevid); + __mach_port_deallocate (__mach_task_self (), rootid); + __mach_port_deallocate (__mach_task_self (), rootdevid); if (dirbuf != NULL) __vm_deallocate (__mach_task_self (), @@ -81,37 +84,30 @@ __getcwd (char *buf, size_t size) file_namep = file_name + size; *--file_namep = '\0'; - /* Get a port to our root directory and stat it. */ + /* Get a port to our root directory and get its identity. */ - if (err = __USEPORT (CRDIR, __io_stat (port, &st))) + if (err = __USEPORT (CRDIR, __io_identity (port, + &rootid, &rootdevid, &rootino))) return __hurd_fail (err), NULL; - rootdev = st.st_dev; - rootino = st.st_ino; + __mach_port_deallocate (__mach_task_self (), rootdevid); /* Get a port to our current working directory and stat it. */ - if (err = __USEPORT (CWDIR, __mach_port_mod_refs (__mach_task_self (), - (parent = port), - MACH_PORT_RIGHT_SEND, - 1))) - return __hurd_fail (err), NULL; - if (err = __io_stat (parent, &st)) + if (err = __USEPORT (CRDIR, __io_identity (port, + &thisid, &thisdevid, &thisino))) { - cleanup (); + __mach_port_deallocate (__mach_task_self (), rootid); return __hurd_fail (err), NULL; } - thisdev = st.st_dev; - thisino = st.st_ino; - - while (!(thisdev == rootdev && thisino == rootino)) + while (thisid != rootid) { /* PARENT is a port to the directory we are currently on; - THISDEV and THISINO are its device and node numbers. - Look in its parent (..) for a file with the same numbers. */ + THISID, THISDEV, and THISINO are its identity. + Look in its parent (..) for a file with the same file number. */ struct dirent *d; - dev_t dotdev; + mach_port_t dotid, dotdevid; ino_t dotino; int mount_point; file_t newp; @@ -127,12 +123,12 @@ __getcwd (char *buf, size_t size) __mach_port_deallocate (__mach_task_self (), parent); parent = newp; - /* Figure out if this directory is a mount point. */ - if (err = __io_stat (parent, &st)) + /* Get this directory's identity and figure out if it's a mount point. */ + if (err = __io_identity (parent, &dotid, &dotdevid, &dotino)) goto errlose; - dotdev = st.st_dev; - dotino = st.st_ino; - mount_point = dotdev != thisdev; + __mach_port_deallocate (__mach_task_self (), dotid); + __mach_port_deallocate (__mach_task_self (), dotdevid); + mount_point = dotdevid != thisdevid; /* Search for the last directory. */ direntry = 0; @@ -178,13 +174,17 @@ __getcwd (char *buf, size_t size) { file_t try = __file_name_lookup_under (parent, d->d_name, O_NOLINK, 0); + file_t id, devid; + ino_t fileno; if (try == MACH_PORT_NULL) goto lose; - err = __io_stat (try, &st); + err = __io_identity (try, &id, &devid, &fileno); __mach_port_deallocate (__mach_task_self (), try); if (err) goto errlose; - if (st.st_dev == thisdev && st.st_ino == thisino) + __mach_port_deallocate (__mach_task_self (), id); + __mach_port_deallocate (__mach_task_self (), devid); + if (id == thisid) goto found; } } @@ -232,7 +232,10 @@ __getcwd (char *buf, size_t size) /* The next iteration will find the name of the directory we just searched through. */ - thisdev = dotdev; + __mach_port_deallocate (__mach_task_self (), thisid); + __mach_port_deallocate (__mach_task_self (), thisdevid); + thisid = dotid; + thisdevid = dotdevid; thisino = dotino; } |