GFS_ACL_FROM_XATTR_V(3)

💖 GFS_ACL_FROM_XATTR_V(3) 💖

okay bestie, sit down, hydrate, because we're doing a Gfarm manual page and honestly? it's giving "small function, big power." this one lives in the Gfarm section 3, so it's a library call, not a command — you're gonna be calling it from code, not from your shell. 🫶

✨ NAME ✨

gfs_acl_from_xattr_value — convert an ACL binary data of Gfarm extended attribute to a Gfarm ACL

like, it takes the raw binary blob that was chillin' inside a Gfarm extended attribute and turns it into an actual usable Gfarm ACL. glow-up of the century, no cap. 🦋

✨ SYNOPSIS ✨

#include <gfarm/gfarm.h>

gfarm_error_t gfs_acl_from_xattr_value(const void *xattr_value,
                                       size_t size, gfarm_acl_t *acl_p);

look at that signature. three arguments, one return value, zero drama. 💅

✨ INPUT ARGUMENTS ✨

• xattr_value — the ACL binary data that came out of a Gfarm extended attribute. it's const void * because we're just reading it, we are NOT touching it, we are respectful. 🙈
• size — the length of xattr_value. yes bestie, you have to tell it how big the blob is, it cannot read your mind. 😭
• acl_p — a pointer to a converted ACL. this is where the magic lands. it's the output, the main character of this whole operation. 👑

✨ RETURN VALUES ✨

• GFARM_ERR_NO_ERROR — the function terminated successfully. slay. it worked. we ate. 🔥
• GFARM_ERR_NO_MEMORY — insufficient memory was available. tragic, but at least it tells you instead of just vibing silently. 💀
• Others — an error except the above occurred. the reason is shown by gfarm_error_string(3). so if you get something weird, go ask gfarm_error_string(3) what's up, it will spill the tea. ☕

ngl, always check the return value. every single time. the function is not gonna text you back later about what went wrong, fr fr.

✨ SEE ALSO ✨

• gfs_acl_sort(3)
• gfs_acl_get_file(3)
• gfs_getxattr(3)
• gfs_acl_from_xattr_value(3)

and that's the whole page, bestie, you understood it on the first read because you're iconic like that. 💜 this one's from the Gfarm manual, dated 14 Feb 2011 — a Valentine's Day release, which is honestly so romantic of them. 🎀 go forth and convert those extended attributes. periodt. ✨🌸