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93822c2239
We have a number of badly checked write() calls. Often we are expecting write() to write exactly the size we requested or fail, this fails to handle interrupts or short writes. Switch to using the new write_in_full(). Otherwise we at a minimum need to check for EINTR and EAGAIN, where this is appropriate use xwrite(). Note, the changes to config handling are much larger and handled in the next patch in the sequence. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/*
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* test-delta.c: test code to exercise diff-delta.c and patch-delta.c
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*
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* (C) 2005 Nicolas Pitre <nico@cam.org>
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*
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* This code is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "git-compat-util.h"
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#include "delta.h"
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static const char usage[] =
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"test-delta (-d|-p) <from_file> <data_file> <out_file>";
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int main(int argc, char *argv[])
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{
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int fd;
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struct stat st;
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void *from_buf, *data_buf, *out_buf;
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unsigned long from_size, data_size, out_size;
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if (argc != 5 || (strcmp(argv[1], "-d") && strcmp(argv[1], "-p"))) {
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fprintf(stderr, "Usage: %s\n", usage);
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return 1;
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}
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fd = open(argv[2], O_RDONLY);
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if (fd < 0 || fstat(fd, &st)) {
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perror(argv[2]);
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return 1;
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}
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from_size = st.st_size;
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from_buf = mmap(NULL, from_size, PROT_READ, MAP_PRIVATE, fd, 0);
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if (from_buf == MAP_FAILED) {
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perror(argv[2]);
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close(fd);
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return 1;
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}
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close(fd);
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fd = open(argv[3], O_RDONLY);
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if (fd < 0 || fstat(fd, &st)) {
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perror(argv[3]);
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return 1;
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}
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data_size = st.st_size;
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data_buf = mmap(NULL, data_size, PROT_READ, MAP_PRIVATE, fd, 0);
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if (data_buf == MAP_FAILED) {
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perror(argv[3]);
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close(fd);
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return 1;
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}
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close(fd);
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if (argv[1][1] == 'd')
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out_buf = diff_delta(from_buf, from_size,
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data_buf, data_size,
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&out_size, 0);
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else
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out_buf = patch_delta(from_buf, from_size,
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data_buf, data_size,
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&out_size);
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if (!out_buf) {
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fprintf(stderr, "delta operation failed (returned NULL)\n");
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return 1;
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}
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fd = open (argv[4], O_WRONLY|O_CREAT|O_TRUNC, 0666);
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if (fd < 0 || write_in_full(fd, out_buf, out_size) != out_size) {
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perror(argv[4]);
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return 1;
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}
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return 0;
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}
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