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* lib/extendbuf.c (xextendbuf): New function; extends the buffer, but calls xalloc_die on failure. On the the other hand, extendbuf returns NULL on failure. (decide_size): If wanted>SIZE_MAX/2, return wanted. This means that for very large buffers, performance on repeated extension degrades from linear to quadratic (instead of just failing at that point, as before). * lib/savedirinfo.c (xsavedir): Use xextendbuf rather than extendbuf, now that there is a difference in semantics. * find/fstype.c (get_mounted_filesystems): If extendbuf returns NULL, fail (by returning NULL ourselves). (get_mounted_devices): Likewise. Signed-off-by: James Youngman <jay@gnu.org>
27 lines
959 B
C
27 lines
959 B
C
/* extendbuf.h -- Manage a dynamically-alloicated buffer
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Copyright (C) 2004, 2010 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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef INC_EXTENDBUF_H
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#define INC_EXTENDBUF_H 1
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void *extendbuf(void* existing, size_t wanted, size_t *allocated);
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void *xextendbuf(void* existing, size_t wanted, size_t *allocated);
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#endif
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