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do not set O_TRUNC when opening destination file.

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It prevents `mscp localhost:hoge ~/hoge` from truncating the source
file. See https://bugzilla.mindrot.org/show_bug.cgi?id=3431.

https://github.com/upa/mscp/issues/1
This commit is contained in:
Ryo Nakamura
2023-08-04 15:06:14 +09:00
parent 16f2f88cc9
commit 24c1bc9149
4 changed files with 33 additions and 8 deletions
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17
src/fileops.c
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@@ -293,15 +293,24 @@ int mscp_lseek(mf *f, size_t off)
return ret;
}
int mscp_chmod(const char *path, mode_t mode, sftp_session sftp)
int mscp_setstat(const char *path, mode_t mode, size_t size, sftp_session sftp)
{
int ret;
if (sftp) {
ret = sftp_chmod(sftp, path, mode);
struct sftp_attributes_struct attr;
memset(&attr, 0, sizeof(attr));
attr.permissions = mode;
attr.size = size;
attr.flags = (SSH_FILEXFER_ATTR_PERMISSIONS|SSH_FILEXFER_ATTR_SIZE);
ret = sftp_setstat(sftp, path, &attr);
sftp_err_to_errno(sftp);
} else
ret = chmod(path, mode);
} else {
if ((ret = chmod(path, mode)) < 0)
return ret;
if ((ret = truncate(path, size)) < 0)
return ret;
}
return ret;
}