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Merge branch 'hash-always-has-type' of github.com:obsidiansystems/nix into better-ca-parse-errors

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This commit is contained in:
John Ericson 2020-07-16 17:28:52 +00:00
commit cc0d77f8c9
138 changed files with 8552 additions and 2192 deletions
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30
src/libutil/util.cc
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@ -23,6 +23,7 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/un.h>
#include <unistd.h>
@ -79,7 +80,7 @@ void replaceEnv(std::map<std::string, std::string> newEnv)
}
Path absPath(Path path, std::optional<Path> dir)
Path absPath(Path path, std::optional<Path> dir, bool resolveSymlinks)
{
if (path[0] != '/') {
if (!dir) {
@ -100,7 +101,7 @@ Path absPath(Path path, std::optional<Path> dir)
}
path = *dir + "/" + path;
}
return canonPath(path);
return canonPath(path, resolveSymlinks);
}
@ -345,7 +346,6 @@ void writeFile(const Path & path, Source & source, mode_t mode)
}
}
string readLine(int fd)
{
string s;
@ -581,20 +581,31 @@ Paths createDirs(const Path & path)
}
void createSymlink(const Path & target, const Path & link)
void createSymlink(const Path & target, const Path & link,
std::optional<time_t> mtime)
{
if (symlink(target.c_str(), link.c_str()))
throw SysError("creating symlink from '%1%' to '%2%'", link, target);
if (mtime) {
struct timeval times[2];
times[0].tv_sec = *mtime;
times[0].tv_usec = 0;
times[1].tv_sec = *mtime;
times[1].tv_usec = 0;
if (lutimes(link.c_str(), times))
throw SysError("setting time of symlink '%s'", link);
}
}
void replaceSymlink(const Path & target, const Path & link)
void replaceSymlink(const Path & target, const Path & link,
std::optional<time_t> mtime)
{
for (unsigned int n = 0; true; n++) {
Path tmp = canonPath(fmt("%s/.%d_%s", dirOf(link), n, baseNameOf(link)));
try {
createSymlink(target, tmp);
createSymlink(target, tmp, mtime);
} catch (SysError & e) {
if (e.errNo == EEXIST) continue;
throw;
@ -1006,12 +1017,14 @@ std::vector<char *> stringsToCharPtrs(const Strings & ss)
return res;
}
// Output = "standard out" output stream
string runProgram(Path program, bool searchPath, const Strings & args,
const std::optional<std::string> & input)
{
RunOptions opts(program, args);
opts.searchPath = searchPath;
// This allows you to refer to a program with a pathname relative to the
// PATH variable.
opts.input = input;
auto res = runProgram(opts);
@ -1022,6 +1035,7 @@ string runProgram(Path program, bool searchPath, const Strings & args,
return res.second;
}
// Output = error code + "standard out" output stream
std::pair<int, std::string> runProgram(const RunOptions & options_)
{
RunOptions options(options_);
@ -1094,6 +1108,8 @@ void runProgram2(const RunOptions & options)
if (options.searchPath)
execvp(options.program.c_str(), stringsToCharPtrs(args_).data());
// This allows you to refer to a program with a pathname relative
// to the PATH variable.
else
execv(options.program.c_str(), stringsToCharPtrs(args_).data());