c81b35c08b
Here we replace the various fgets() with a mmap() call for the config file reading, due to the reported performance problems with klibc. Thanks to Patrick's testing, it makes a very small, close to nothing speed gain for libc users, but a 6 times speed increase for klibc users with a 1000 line config file. I've created a udev_lib.[hc] for this and also moved all the generic stuff from udev.h in there and uninlined the functions.
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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* udev_lib - generic stuff used by udev
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*
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* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _UDEV_LIB_H_
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#define _UDEV_LIB_H_
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#define strfieldcpy(to, from) \
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do { \
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to[sizeof(to)-1] = '\0'; \
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strncpy(to, from, sizeof(to)-1); \
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} while (0)
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#define strfieldcat(to, from) \
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do { \
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to[sizeof(to)-1] = '\0'; \
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strncat(to, from, sizeof(to) - strlen(to)-1); \
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} while (0)
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#define strfieldcpymax(to, from, maxsize) \
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do { \
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to[maxsize-1] = '\0'; \
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strncpy(to, from, maxsize-1); \
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} while (0)
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#define strfieldcatmax(to, from, maxsize) \
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do { \
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to[maxsize-1] = '\0'; \
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strncat(to, from, maxsize - strlen(to)-1); \
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} while (0)
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#define strintcat(to, i) \
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do { \
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to[sizeof(to)-1] = '\0'; \
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snprintf((to) + strlen(to), sizeof(to) - strlen(to)-1, "%u", i); \
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} while (0)
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#define strintcatmax(to, i, maxsize) \
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do { \
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to[maxsize-1] = '\0'; \
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snprintf((to) + strlen(to), maxsize - strlen(to)-1, "%u", i); \
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} while (0)
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#define foreach_strpart(str, separator, pos, len) \
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for(pos = str, len = 0; \
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(pos) < ((str) + strlen(str)); \
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pos = pos + len + strspn(pos, separator), len = strcspn(pos, separator)) \
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if (len > 0)
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extern char *get_action(void);
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extern char *get_devpath(void);
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extern char *get_seqnum(void);
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extern char *get_subsystem(char *subsystem);
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extern int file_map(const char *filename, char **buf, size_t *bufsize);
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extern void file_unmap(char *buf, size_t bufsize);
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extern size_t buf_get_line(char *buf, size_t buflen, size_t cur);
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#endif
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