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d03b1779b4
The code in _print_historical_lv function works with temporary "descendants_buffer" that is allocated and freed within this function. When printing text out, we used "outf" macro which called "out_text" fn and it checked return value and if failed, the macro called "return_0" automatically. But since we use the temporary buffer, if any of the out_text calls fails, we need to deallocate this buffer properly - that's the "goto_out", otherwise we'll be leaking memory. So add new "outfgo" helper macro which does the same as "outf", but it calls "goto_out" instead of "return_0" so we can jump to a cleanup hook at the end.
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*
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* Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LVM_TEXT_EXPORT_H
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#define _LVM_TEXT_EXPORT_H
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#define outsize(args...) do {if (!out_size(args)) return_0;} while (0)
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#define outhint(args...) do {if (!out_hint(args)) return_0;} while (0)
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#define outfc(args...) do {if (!out_text_with_comment(args)) return_0;} while (0)
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#define outf(args...) do {if (!out_text(args)) return_0;} while (0)
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#define outfgo(args...) do {if (!out_text(args)) goto_out;} while (0)
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#define outnl(f) do {if (!out_newline(f)) return_0;} while (0)
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struct formatter;
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struct lv_segment;
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struct dm_config_node;
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int out_size(struct formatter *f, uint64_t size, const char *fmt, ...)
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__attribute__ ((format(printf, 3, 4)));
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int out_hint(struct formatter *f, const char *fmt, ...)
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__attribute__ ((format(printf, 2, 3)));
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int out_text(struct formatter *f, const char *fmt, ...)
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__attribute__ ((format(printf, 2, 3)));
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int out_config_node(struct formatter *f, const struct dm_config_node *cn);
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int out_areas(struct formatter *f, const struct lv_segment *seg,
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const char *type);
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int out_text_with_comment(struct formatter *f, const char* comment, const char *fmt, ...)
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__attribute__ ((format(printf, 3, 4)));
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void out_inc_indent(struct formatter *f);
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void out_dec_indent(struct formatter *f);
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int out_newline(struct formatter *f);
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#endif
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