134 lines
2.5 KiB
C
134 lines
2.5 KiB
C
#include "../git-compat-util.h"
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#include "system.h"
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#include "basics.h"
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#include "reftable-error.h"
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#include "../lockfile.h"
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#include "../tempfile.h"
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uint32_t reftable_rand(void)
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{
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return git_rand(CSPRNG_BYTES_INSECURE);
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}
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int tmpfile_from_pattern(struct reftable_tmpfile *out, const char *pattern)
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{
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struct tempfile *tempfile;
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tempfile = mks_tempfile(pattern);
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if (!tempfile)
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return REFTABLE_IO_ERROR;
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out->path = tempfile->filename.buf;
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out->fd = tempfile->fd;
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out->priv = tempfile;
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return 0;
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}
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int tmpfile_close(struct reftable_tmpfile *t)
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{
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struct tempfile *tempfile = t->priv;
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int ret = close_tempfile_gently(tempfile);
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t->fd = -1;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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int tmpfile_delete(struct reftable_tmpfile *t)
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{
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struct tempfile *tempfile = t->priv;
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int ret = delete_tempfile(&tempfile);
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*t = REFTABLE_TMPFILE_INIT;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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int tmpfile_rename(struct reftable_tmpfile *t, const char *path)
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{
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struct tempfile *tempfile = t->priv;
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int ret = rename_tempfile(&tempfile, path);
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*t = REFTABLE_TMPFILE_INIT;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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int flock_acquire(struct reftable_flock *l, const char *target_path,
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long timeout_ms)
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{
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struct lock_file *lockfile;
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int err;
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lockfile = reftable_malloc(sizeof(*lockfile));
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if (!lockfile)
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return REFTABLE_OUT_OF_MEMORY_ERROR;
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err = hold_lock_file_for_update_timeout(lockfile, target_path, LOCK_NO_DEREF,
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timeout_ms);
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if (err < 0) {
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reftable_free(lockfile);
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if (errno == EEXIST)
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return REFTABLE_LOCK_ERROR;
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return -1;
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}
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l->fd = get_lock_file_fd(lockfile);
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l->path = get_lock_file_path(lockfile);
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l->priv = lockfile;
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return 0;
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}
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int flock_close(struct reftable_flock *l)
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{
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struct lock_file *lockfile = l->priv;
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int ret;
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if (!lockfile)
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return REFTABLE_API_ERROR;
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ret = close_lock_file_gently(lockfile);
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l->fd = -1;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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int flock_release(struct reftable_flock *l)
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{
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struct lock_file *lockfile = l->priv;
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int ret;
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if (!lockfile)
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return 0;
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ret = rollback_lock_file(lockfile);
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reftable_free(lockfile);
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*l = REFTABLE_FLOCK_INIT;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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int flock_commit(struct reftable_flock *l)
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{
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struct lock_file *lockfile = l->priv;
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int ret;
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if (!lockfile)
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return REFTABLE_API_ERROR;
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ret = commit_lock_file(lockfile);
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reftable_free(lockfile);
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*l = REFTABLE_FLOCK_INIT;
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if (ret < 0)
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return REFTABLE_IO_ERROR;
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return 0;
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}
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