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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
| commit | 96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c (patch) | |
| tree | 70686b943e33a6e939ad265acb7ddfef70b91f32 /man/man3/ftok.3 | |
| parent | 8f4ed6463206e8ede815c72085c7305dafc2e4fc (diff) | |
| download | man-pages-96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c.tar.gz | |
Revert "src.mk, All pages: Move man* to man/"
This reverts commit 70ac1c4785fc1e158ab2349a962dba2526bf4fbc.
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Reported-by: Petr Vorel <pvorel@suse.cz>
Reported-by: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alex Colomar <alx.manpages@gmail.com>
Diffstat (limited to 'man/man3/ftok.3')
| -rw-r--r-- | man/man3/ftok.3 | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/man/man3/ftok.3 b/man/man3/ftok.3 deleted file mode 100644 index 600d216ed6..0000000000 --- a/man/man3/ftok.3 +++ /dev/null @@ -1,110 +0,0 @@ -.\" Copyright 1993 Giorgio Ciucci (giorgio@crcc.it) -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" Modified 2001-11-28, by Michael Kerrisk, <mtk.manpages@gmail.com> -.\" Changed data type of proj_id; minor fixes -.\" aeb: further fixes; added notes. -.\" -.TH FTOK 3 2021-03-22 "Linux man-pages (unreleased)" -.SH NAME -ftok \- convert a pathname and a project identifier to a System V IPC key -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <sys/ipc.h> -.fi -.PP -.BI "key_t ftok(const char *" pathname ", int " proj_id ); -.SH DESCRIPTION -The -.BR ftok () -function uses the identity of the file named by the given -.I pathname -(which must refer to an existing, accessible file) -and the least significant 8 bits of -.I proj_id -(which must be nonzero) to generate a -.I key_t -type System V IPC key, suitable for use with -.BR msgget (2), -.BR semget (2), -or -.BR shmget (2). -.PP -The resulting value is the same for all pathnames that -name the same file, when the same value of -.I proj_id -is used. -The value returned should be different when the -(simultaneously existing) files or the project IDs differ. -.SH RETURN VALUE -On success, the generated -.I key_t -value is returned. -On failure \-1 is returned, with -.I errno -indicating the error as for the -.BR stat (2) -system call. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.ad l -.nh -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.BR ftok () -T} Thread safety MT-Safe -.TE -.hy -.ad -.sp 1 -.SH STANDARDS -POSIX.1-2001, POSIX.1-2008. -.SH NOTES -On some ancient systems, the prototype was: -.PP -.in +4n -.EX -.BI "key_t ftok(char *" pathname ", char " proj_id ); -.EE -.in -.PP -Today, -.I proj_id -is an -.IR int , -but still only 8 bits are used. -Typical usage has an ASCII character -.IR proj_id , -that is why the behavior is said to be undefined when -.I proj_id -is zero. -.PP -Of course, no guarantee can be given that the resulting -.I key_t -is unique. -Typically, a best-effort attempt combines the given -.I proj_id -byte, the lower 16 bits of the inode number, and the -lower 8 bits of the device number into a 32-bit result. -Collisions may easily happen, for example between files on -.I /dev/hda1 -and files on -.IR /dev/sda1 . -.SH EXAMPLES -See -.BR semget (2). -.SH SEE ALSO -.BR msgget (2), -.BR semget (2), -.BR shmget (2), -.BR stat (2), -.BR sysvipc (7) |