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LibC: Implement crappy version of pread()

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This patch adds a crappy pread() just to get "git" working locally.
A proper version would be implemented in the kernel so that we don't
have to mess with the file descriptor's offset at all.
This commit is contained in:
Andreas Kling 2020-02-20 06:59:23 +01:00
parent 7c12d66f61
commit cd495786a8
2 changed files with 11 additions and 0 deletions
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10
Libraries/LibC/unistd.cpp
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@ -702,6 +702,16 @@ int unveil(const char* path, const char* permissions)
__RETURN_WITH_ERRNO(rc, rc, -1);
}
ssize_t pread(int fd, void* buf, size_t count, off_t offset)
{
// FIXME: This is not thread safe and should be implemented in the kernel instead.
off_t old_offset = lseek(fd, 0, SEEK_CUR);
lseek(fd, offset, SEEK_SET);
ssize_t nread = read(fd, buf, count);
lseek(fd, old_offset, SEEK_SET);
return nread;
}
char* getpass(const char* prompt)
{
dbg() << "FIXME: getpass(\"" << prompt << "\")";