From 75990cb8c930b4b74b36fd64b7c2488741ae40f9 Mon Sep 17 00:00:00 2001 From: Ognyan Kulev Date: Mon, 9 Dec 2002 15:20:00 +0000 Subject: none --- Hurd/HurdSpecificGlibcApi.mdwn | 165 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 Hurd/HurdSpecificGlibcApi.mdwn (limited to 'Hurd') diff --git a/Hurd/HurdSpecificGlibcApi.mdwn b/Hurd/HurdSpecificGlibcApi.mdwn new file mode 100644 index 00000000..75a6cab7 --- /dev/null +++ b/Hurd/HurdSpecificGlibcApi.mdwn @@ -0,0 +1,165 @@ +## Hurd-specific glibc API + +These functions have meaning only under Hurd. They are needed to get port names that are used in native Hurd API (the RPC calls to servers). The `.defs` and `.h` files can be found in + +`/include/hurd` when all development files are installed (Debian package `hurd-dev`.) Note that `.defs` are not included in C programs - they are used to produce `.h` files. + +
+

+

+
file_t
+
getcwdir (void);
+

+

+
Get file_t port name of current working directory. See <hurd/fs.defs> and <hurd/fs.h>.
+

+

+
int
+
setcwdir (file_t);
+
Set current working directory.
+

+

+
file_t
+
getcrdir (void);
+
Get file_t port name of current root directory.
+

+

+
int
+
setcrdir (file_t);
+

+

+
Set current root directory.
+

+

+
file_t
+
file_name_lookup (const char *file, int flags, mode_t mode);
+
Open a port to FILE with the given FLAGS and MODE (see <fcntl.h>). The file lookup uses the current root and working directory. Returns a port to the file if successful; otherwise sets errno and returns MACH_PORT_NULL.
+

+

+
file_t
+
file_name_lookup_under (file_t startdir, const char *file, int flags, mode_t mode);
+
Open a port to FILE with the given FLAGS and MODE (see <fcntl.h>). The file lookup uses the current root directory, but uses STARTDIR as the "working directory" for file relative names. Returns a port to the file if successful; otherwise sets errno and returns MACH_PORT_NULL.
+

+

+
file_t
+
file_name_path_lookup (const char *file_name, const char *path, int flags, mode_t mode, char **prefixed_name);
+
Lookup FILE_NAME and return the node opened with FLAGS & MODE (see hurd_file_name_lookup for details), but a simple file name (without any directory prefixes) will be consecutively prefixed with the pathnames in the : separated list PATH until one succeeds in a successful lookup. If none succeed, then the first error that wasn't ENOENT is returned, or ENOENT if no other errors were returned. If PREFIXED_NAME is non-NULL, then if the result is looked up directly, *PREFIXED_NAME is set to NULL, and if it is looked up using a prefix from PATH, *PREFIXED_NAME is set to malloc'd storage containing the prefixed name.
+

+

+
file_t
+
file_name_split (const char  file, char **name);
+
Split FILE into a directory and a name within the directory. The directory lookup uses the current root and working directory. If successful, stores in *NAME a pointer into FILE where the name within directory begins and returns a port to the directory; otherwise sets errno and returns MACH_PORT_NULL.
+

+

+
file_t
+
directory_name_split (const char *file, char **name);
+

+

+
Split DIRECTORY into a parent directory and a name within the directory. This is the same as file_name_split, but ignores trailing slashes.
+

+

+
FILE *
+
fopenport (io_t port, const char *mode);
+
Open a stream on a port. MODE is as for fopen. If successful, this consumes a user reference for PORT (which will be deallocated on fclose).
+

+

+
int
+
openport (io_t port, int flags);
+

+

+
Open a file descriptor on a port. FLAGS are as for open; flags affected by io_set_openmodes are not changed by this. If successful, this consumes a user reference for PORT (which will be deallocated on close.) See <hurd/io.defs> and <hurd/io.h>.
+

+

+
task_t
+
pid2task (pid_t pid);
+

+

+
Return the task control port of process PID. On error, sets errno and returns MACH_PORT_NULL.
+

+

+
pid_t
+
task2pid (task_t task);
+
Return the PID of the task whose control port is TASK. On error, sets errno and returns -1.
+

+

+
int
+
geteuids (int n, uid_t *uidset);
+
Get the effective UID set.
+

+

+
int
+
seteuids (int n, const uid_t *uidset);
+
Set the effective UID set.
+

+

+
auth_t
+
getauth (void);
+
Get port name of current authentication server. See <hurd/auth.defs> and <hurd/auth.h>.
+

+

+
int
+
setauth (auth_t);
+

+

+
Set current authentication server.
+

+

+
process_t
+
getproc (void);
+
Get port name of current process server. See <hurd/process.defs> and <hurd/process.h>.
+

+

+
int
+
setproc (process_t);
+

+

+
Set current process server.
+

+

+
mach_port_t
+
getcttyid (void);
+
Get the CTTY port.
+

+

+
int
+
setcttyid (mach_port_t);
+
Set the CTTY port.
+

+

+
kern_return_t
+
get_privileged_ports (host_priv_t *host_priv_ptr, device_t *device_master_ptr);
+
Fetch the host privileged port and device master port from the process server.
+

+

+
mode_t
+
getumask (void);
+
Get the current `umask' value without changing it (this glibc functions is available only under GNU Hurd.)
+

+

+
int
+
vpprintf (io_t port, const char *format, va_list arg);
+
Write formatted output to PORT, a Mach port supporting the i/o protocol, according to the format string FORMAT, using the argument list in ARG.
+

+

+
thread_t
+
hurd_thread_self (void);
+
Return the current thread's thread port. This is a cheap operation (no system call), but it relies on Hurd signal state being set up.
+

+

+
error_t
+
hurd_thread_cancel (thread_t thread);
+

+

+
Cancel pending operations on THREAD. If it is doing an interruptible RPC, that RPC will now return EINTR; otherwise, the "cancelled" flag will be set, causing the next hurd_check_cancel call to return nonzero or the next interruptible RPC to return EINTR (whichever is called first).
+

+

+
int
+
hurd_check_cancel (void);
+

+

+
Test and clear the calling thread's "cancelled" flag.
+

+

+
+ +-- [[Main/OgnyanKulev]] - 09 Dec 2002 -- cgit v1.2.3