GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
Unix |
Unix v6 |
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creat(2) |
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creat create a new file (creat = 8.)
sys creat; name; mode
(file descriptor in r0) creat(name, mode)
char *name; creates a new file or prepares to rewrite an
existing file called given as the address of a
null-terminated string. If the file did not exist, it is
given mode See (II) for the construction of the argument. If
the file did exist, its mode and owner remain unchanged but
it is truncated to 0 length. The file is also opened for
writing, and its file descriptor is returned (in r0). The
given is arbitrary; it need not allow writing. This feature
is used by programs which deal with temporary files of fixed
names. The creation is done with a mode that forbids
writing. Then if a second instance of the program attempts a
an error is returned and the program knows that the name is
unusable for the moment. write (II), close (II), stat (II)
The error bit (c-bit) may be set if: a needed directory is
not searchable; the file does not exist and the directory in
which it is to be created is not writable; the file does
exist and is unwritable; the file is a directory; there are
already too many files open. From C, a 1 return indicates an
error.
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creat(2) | |