mirror of
https://github.com/git/git.git
synced 2024-11-06 17:23:00 +01:00
85023577a8
This is a mechanical clean-up of the way *.c files include
system header files.
(1) sources under compat/, platform sha-1 implementations, and
xdelta code are exempt from the following rules;
(2) the first #include must be "git-compat-util.h" or one of
our own header file that includes it first (e.g. config.h,
builtin.h, pkt-line.h);
(3) system headers that are included in "git-compat-util.h"
need not be included in individual C source files.
(4) "git-compat-util.h" does not have to include subsystem
specific header files (e.g. expat.h).
Signed-off-by: Junio C Hamano <junkio@cox.net>
52 lines
879 B
C
52 lines
879 B
C
#include "../git-compat-util.h"
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void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset)
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{
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int n = 0;
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off_t current_offset = lseek(fd, 0, SEEK_CUR);
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if (start != NULL || !(flags & MAP_PRIVATE))
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die("Invalid usage of gitfakemmap.");
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if (lseek(fd, offset, SEEK_SET) < 0) {
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errno = EINVAL;
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return MAP_FAILED;
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}
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start = xmalloc(length);
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if (start == NULL) {
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errno = ENOMEM;
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return MAP_FAILED;
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}
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while (n < length) {
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int count = read(fd, start+n, length-n);
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if (count == 0) {
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memset(start+n, 0, length-n);
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break;
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}
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if (count < 0) {
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free(start);
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errno = EACCES;
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return MAP_FAILED;
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}
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n += count;
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}
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if (current_offset != lseek(fd, current_offset, SEEK_SET)) {
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errno = EINVAL;
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return MAP_FAILED;
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}
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return start;
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}
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int gitfakemunmap(void *start, size_t length)
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{
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free(start);
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return 0;
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}
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