73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
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/* Create a temporary file or directory.
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Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* header written by Eric Blake */
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#ifndef GL_TEMPNAME_H
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# define GL_TEMPNAME_H
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# include <stdio.h>
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# ifdef __GT_FILE
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# define GT_FILE __GT_FILE
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# define GT_DIR __GT_DIR
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# define GT_NOCREATE __GT_NOCREATE
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# else
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# define GT_FILE 0
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# define GT_DIR 1
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# define GT_NOCREATE 2
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# endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Generate a temporary file name based on TMPL. TMPL must match the
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rules for mk[s]temp (i.e. end in "XXXXXX", possibly with a suffix).
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The name constructed does not exist at the time of the call to
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gen_tempname. TMPL is overwritten with the result.
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KIND may be one of:
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GT_NOCREATE: simply verify that the name does not exist
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at the time of the call.
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GT_FILE: create a large file using open(O_CREAT|O_EXCL)
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and return a read-write fd. The file is mode 0600.
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GT_DIR: create a directory, which will be mode 0700.
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We use a clever algorithm to get hard-to-predict names. */
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extern int gen_tempname (char *tmpl, int suffixlen, int flags, int kind);
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/* Similar, except X_SUFFIX_LEN gives the number of Xs. */
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extern int gen_tempname_len (char *tmpl, int suffixlen, int flags, int kind,
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size_t x_suffix_len);
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/* Similar to gen_tempname, but TRYFUNC is called for each temporary
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name to try. If TRYFUNC returns a non-negative number, TRY_GEN_TEMPNAME
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returns with this value. Otherwise, if errno is set to EEXIST, another
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name is tried, or else TRY_GEN_TEMPNAME returns -1. */
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extern int try_tempname (char *tmpl, int suffixlen, void *args,
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int (*tryfunc) (char *, void *));
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/* Similar, except X_SUFFIX_LEN gives the number of Xs. */
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extern int try_tempname_len (char *tmpl, int suffixlen, void *args,
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int (*tryfunc) (char *, void *),
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size_t x_suffix_len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* GL_TEMPNAME_H */
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