Hi! I have a CGI program that must delete files from a server and it's owned by www-data which allows me to read a file but not to delete it, even though the file has permissions 777. The folder containing the files I want to delete has permissions "drwxrwxrwx" and it's owned by "root:root" and it's files has the same characteristics. -------------- next part --------------
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Mailing lists / lazarus / 2017-10
DeleteFile
4 messages · 3 people · –
- Agustìn Gregorieu 2
- leledumbo 1
- Michael Van Canneyt 1
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Hi! I have a CGI program that must delete files from a server and it's
owned by www-data which allows me to read a file but not to delete it, even though the file has permissions 777. The folder containing the files I want to delete has permissions "drwxrwxrwx" and it's owned by "root:root" and it's files has the same characteristics.
Well, that requires a deeper inspection. Try inspecting return value of SysErrorMessage(GetLastOSError) after a failed deletion.
Hi! I have a CGI program that must delete files from a server and it's owned by www-data…
Agustìn Gregorieu wrote 5 lines
Hi! I have a CGI program that must delete files from a server and it's
owned by www-data which allows me to read a file but not to delete it,
even though the file has permissions 777. The folder containing the files
I want to delete has permissions "drwxrwxrwx" and it's owned by
"root:root" and it's files has the same characteristics.
You should check the return value of GetLastOSError. If that does not tell you anything, try stracing your program. For a cgi program, what I usually do is create a shell script which I place instead of the actual binary:
#!/bin/sh
exec strace -o /tmp/cgi.log /path/to/real/cgi/program.bin
Michael.
Thank you for your answer! I've already solved it, using the GetLastOSError I got a "permission denied" message, so after I change some group permissions on the folder I manage to delete correctly the files.
On Tue, 31 Oct 2017, Agustìn Gregorieu via Lazarus wrote:
Hi! I have a CGI program that must delete files from a server and it's owned by www-data which allows me to read a file but not to delete it, even though the file has permissions 777. The folder containing the files I want to delete has permissions "drwxrwxrwx" and it's owned by "root:root" and it's files has the same characteristics.
You should check the return value of GetLastOSError. If that does not tell you anything, try stracing your program. For a cgi program, what I usually do is create a shell script which I place instead of the actual binary:
#!/bin/sh
exec strace -o /tmp/cgi.log /path/to/real/cgi/program.bin
Michael.
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