That means you have promised CIC that you will return to your home country after completion of your study period. Now if you file your application for permanent residence during study permit then CIC has shall consider it as Dual intent
A person's desire to apply for permanent residence before or during the period of study
in Canada may be legitimate. An officer should distinguish between a bona fide applicant and an applicant who has no intention of leaving Canada if the application for permanent residency is refused.
In determining bona fides, as defined by CIC's Overseas Processing Manual, Chapter 12, Section 5.155.15. Bona fides
Bona fides of all students must be assessed on an individual basis; refusals of non-bona fide
students may only withstand legal challenge when the refusal is based on the information related
to the specific case before the officer. Therefore, while cultural context or historical migration
patterns of a client group may be a contributing factor to the decision-making process, they alone
are not valid, legally tenable grounds for refusal on bona fides. If officers wish to take into
account outside information, particularly where that information leads to concerns/doubts about
the applicant's bona fides, the applicant must be made aware of the information taken into
account and given an opportunity to address those concerns. This interaction should be fully
documented in the Computer-Assisted Immigration Processing System (CAIPS) / Field
Operations Support System (FOSS) notes. The onus, as always, remains on the applicant to
establish that they are a bona fide temporary resident who will leave Canada following the
completion of their studies pursuant to section R216(1)(b).
Section A22(2) (Dual intent) states that an intention by a foreign national to become a permanent
resident does not preclude them from becoming a temporary resident if the officer is satisfied that
they will leave Canada by the end of the period authorized for their stay. In assessing an
application, an officer should consider:
• the length of time that they will be spending in Canada;
• the means of support;
• obligations and ties in home country;
• the likelihood of leaving Canada should an application for permanent residence be refused;
• compliance with requirements of the Act and Regulations.
Thanks again for your reply much helpful, but I could not get the understanding of the second link since I am already on study permit in Canada and I am offered a job letter.