swh:1:snp:47f1e8bb459169b0feb652a9c3d9cbabd8526d4a
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Tip revision: e230c568c4b9a991e3175e5f65171a566fd8e39c authored by Junio C Hamano on 23 August 2013, 18:49:46 UTC
Git 1.8.4
Tip revision: e230c56
pread.c
#include "../git-compat-util.h"

ssize_t git_pread(int fd, void *buf, size_t count, off_t offset)
{
        off_t current_offset;
        ssize_t rc;

        current_offset = lseek(fd, 0, SEEK_CUR);

        if (lseek(fd, offset, SEEK_SET) < 0)
                return -1;

        rc = read_in_full(fd, buf, count);

        if (current_offset != lseek(fd, current_offset, SEEK_SET))
                return -1;
        return rc;
}
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